[740] Chief Justice Rehnquist
delivered the opinion of the Court.
In this case, we return to the issue that splintered the Court in Baldasar v. Illinois, 446 U. S. 222 (1980): Whether the Constitution prohibits a sentencing court from considering a defendant’s previous uncounseled misdemeanor conviction in sentencing him for a subsequent offense.
In 1990, petitioner Nichols pleaded guilty to conspiracy to possess cocaine with intent to distribute, in violation of 21 U. S. C. § 846. Pursuant to the United States Sentencing Commission’s Guidelines (Sentencing Guidelines), petitioner was assessed three criminal history points for a 1983 federal felony drug conviction. An additional criminal history point was assessed for petitioner’s 1983 state misdemeanor conviction for driving under the influence (DUI), for which petitioner was fined $250 but was not incarcerated.1 This additional criminal history point increased petitioner’s Criminal History Category from Category II to Category III.2 As a result, petitioner’s sentencing range under the Sentencing Guidelines increased from 168-210 months (under Criminal History Category II) to 188-235 months (under Category III).3
[741] Petitioner objected to the inclusion of his DUI misdemeanor conviction in his criminal history score because he was not represented by counsel at that proceeding. He maintained that consideration of that uncounseled misdemeanor conviction in establishing his sentence would violate the Sixth Amendment as construed in Baldasar, supra. The United States District Court for the Eastern District of Tennessee found that petitioner’s misdemeanor conviction was uncounseled and that, based on the record before it, petitioner had not waived his right to counsel.4 763 F. Supp. 277 (1991). But the District Court rejected petitioner’s Baldasar argument, explaining that in the absence of a majority opinion, Baldasar “stands only for the proposition that a prior uncounseled misdemeanor conviction may not be used to create a felony with a prison term.” 763 F. Supp., at 279. Because petitioner’s offense was already defined as a felony, the District Court ruled that Baldasar was inapplicable to the facts of this case; thus, petitioner’s constitutional rights were not violated by using his 1983 DUI conviction to enhance his sentence.5 It sentenced petitioner to the maximum term allowed by the Sentencing Guidelines under its interpretation of Baldasar, a term 25 months longer than if the misdemeanor conviction had not been considered in calculating petitioner’s criminal history score.
[742] A divided panel of the Court of Appeals for the Sixth Circuit affirmed. 979 F. 2d 402 (1992). After reviewing the fractured decision in Baldasar and the opinions from other Courts of Appeals that had considered the issue, the court held that Baldasar limits the collateral use at sentencing of a prior uncounseled misdemeanor conviction only when the effect of such consideration is to convert a misdemeanor into a felony.6 The dissent, while recognizing that “numerous courts have questioned whether [Baldasar] expresses any single holding, and, accordingly, have largely limited Baldasar to its facts,” nevertheless concluded that Baldasar proscribed the use of petitioner’s prior uncounseled DUI conviction to enhance his sentence under the Sentencing Guidelines. 979 F. 2d, at 407-408 (citations omitted).
We granted certiorari, 509 U. S. 953 (1993), to address this important question of Sixth Amendment law, and to thereby resolve a conflict among state courts7 as well as Federal Courts of Appeals.8 We now affirm.
[743] In Scott v. Illinois, 440 U. S. 367 (1979), we held that where no sentence of imprisonment was imposed, a defendant charged with a misdemeanor had no constitutional right to counsel.9 Our decision in Scott was dictated by Argersinger v. Hamlin, 407 U. S. 25 (1972), but we stated that “[e]ven were the matter res nova, we believe that the central premise of Argersinger — that actual imprisonment is a penalty different in kind from fines or the mere threat of imprisonment — is eminently sound and warrants adoption of actual imprisonment as the line defining the constitutional right to appointment of counsel.” Scott, supra, at 373.
One year later, in Baldasar v. Illinois, 446 U. S. 222 (1980), a majority of the Court held that a prior uncounseled misdemeanor conviction, constitutional under Scott, could nevertheless not be collaterally used to convert a second misdemeanor conviction into a felony under the applicable Illinois sentencing enhancement statute. The per curiam opinion in Baldasar provided no rationale for the result; instead, it referred to the “reasons stated in the concurring opinions.” [744] 446 U. S., at 224. There were three different opinions supporting the result. Justice Stewart, who was joined by Justices Brennan and Stevens, stated simply that the defendant “was sentenced to an increased term of imprisonment only because he had been convicted in a previous prosecution in which he had not had the assistance of appointed counsel in his defense,” and that “this prison sentence violated the constitutional rule of Scott . . . .” Ibid. Justice Marshall, who was also joined by Justices Brennan and Stevens, rested his opinion on the proposition that an uncounseled misdemeanor conviction is “not sufficiently reliable” to support imprisonment under Argersinger, and that it “does not become more reliable merely because the accused has been validly convicted of a subsequent offense.” 446 U. S., at 227-228. Justice Blackmun, who provided the fifth vote, ádvanced the same rationale expressed in his dissent in Scott — that the Constitution requires appointment of counsel for an indigent defendant whenever he is charged with a “nonpetty” offense (an offense punishable by more than six months’ imprisonment) or when the defendant is actually sentenced to imprisonment. 446 U. S., at 229-230. Under this rationale, Baldasar’s prior misdemeanor conviction was invalid and could not be used for enhancement purposes because the initial misdemeanor was punishable by a prison term of more than six months.
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[740] Chief Justice Rehnquist
delivered the opinion of the Court.
In this case, we return to the issue that splintered the Court in Baldasar v. Illinois, 446 U. S. 222 (1980): Whether the Constitution prohibits a sentencing court from considering a defendant’s previous uncounseled misdemeanor conviction in sentencing him for a subsequent offense.
In 1990, petitioner Nichols pleaded guilty to conspiracy to possess cocaine with intent to distribute, in violation of 21 U. S. C. § 846. Pursuant to the United States Sentencing Commission’s Guidelines (Sentencing Guidelines), petitioner was assessed three criminal history points for a 1983 federal felony drug conviction. An additional criminal history point was assessed for petitioner’s 1983 state misdemeanor conviction for driving under the influence (DUI), for which petitioner was fined $250 but was not incarcerated.1 This additional criminal history point increased petitioner’s Criminal History Category from Category II to Category III.2 As a result, petitioner’s sentencing range under the Sentencing Guidelines increased from 168-210 months (under Criminal History Category II) to 188-235 months (under Category III).3
[741] Petitioner objected to the inclusion of his DUI misdemeanor conviction in his criminal history score because he was not represented by counsel at that proceeding. He maintained that consideration of that uncounseled misdemeanor conviction in establishing his sentence would violate the Sixth Amendment as construed in Baldasar, supra. The United States District Court for the Eastern District of Tennessee found that petitioner’s misdemeanor conviction was uncounseled and that, based on the record before it, petitioner had not waived his right to counsel.4 763 F. Supp. 277 (1991). But the District Court rejected petitioner’s Baldasar argument, explaining that in the absence of a majority opinion, Baldasar “stands only for the proposition that a prior uncounseled misdemeanor conviction may not be used to create a felony with a prison term.” 763 F. Supp., at 279. Because petitioner’s offense was already defined as a felony, the District Court ruled that Baldasar was inapplicable to the facts of this case; thus, petitioner’s constitutional rights were not violated by using his 1983 DUI conviction to enhance his sentence.5 It sentenced petitioner to the maximum term allowed by the Sentencing Guidelines under its interpretation of Baldasar, a term 25 months longer than if the misdemeanor conviction had not been considered in calculating petitioner’s criminal history score.
[742] A divided panel of the Court of Appeals for the Sixth Circuit affirmed. 979 F. 2d 402 (1992). After reviewing the fractured decision in Baldasar and the opinions from other Courts of Appeals that had considered the issue, the court held that Baldasar limits the collateral use at sentencing of a prior uncounseled misdemeanor conviction only when the effect of such consideration is to convert a misdemeanor into a felony.6 The dissent, while recognizing that “numerous courts have questioned whether [Baldasar] expresses any single holding, and, accordingly, have largely limited Baldasar to its facts,” nevertheless concluded that Baldasar proscribed the use of petitioner’s prior uncounseled DUI conviction to enhance his sentence under the Sentencing Guidelines. 979 F. 2d, at 407-408 (citations omitted).
We granted certiorari, 509 U. S. 953 (1993), to address this important question of Sixth Amendment law, and to thereby resolve a conflict among state courts7 as well as Federal Courts of Appeals.8 We now affirm.
[743] In Scott v. Illinois, 440 U. S. 367 (1979), we held that where no sentence of imprisonment was imposed, a defendant charged with a misdemeanor had no constitutional right to counsel.9 Our decision in Scott was dictated by Argersinger v. Hamlin, 407 U. S. 25 (1972), but we stated that “[e]ven were the matter res nova, we believe that the central premise of Argersinger — that actual imprisonment is a penalty different in kind from fines or the mere threat of imprisonment — is eminently sound and warrants adoption of actual imprisonment as the line defining the constitutional right to appointment of counsel.” Scott, supra, at 373.
One year later, in Baldasar v. Illinois, 446 U. S. 222 (1980), a majority of the Court held that a prior uncounseled misdemeanor conviction, constitutional under Scott, could nevertheless not be collaterally used to convert a second misdemeanor conviction into a felony under the applicable Illinois sentencing enhancement statute. The per curiam opinion in Baldasar provided no rationale for the result; instead, it referred to the “reasons stated in the concurring opinions.” [744] 446 U. S., at 224. There were three different opinions supporting the result. Justice Stewart, who was joined by Justices Brennan and Stevens, stated simply that the defendant “was sentenced to an increased term of imprisonment only because he had been convicted in a previous prosecution in which he had not had the assistance of appointed counsel in his defense,” and that “this prison sentence violated the constitutional rule of Scott . . . .” Ibid. Justice Marshall, who was also joined by Justices Brennan and Stevens, rested his opinion on the proposition that an uncounseled misdemeanor conviction is “not sufficiently reliable” to support imprisonment under Argersinger, and that it “does not become more reliable merely because the accused has been validly convicted of a subsequent offense.” 446 U. S., at 227-228. Justice Blackmun, who provided the fifth vote, ádvanced the same rationale expressed in his dissent in Scott — that the Constitution requires appointment of counsel for an indigent defendant whenever he is charged with a “nonpetty” offense (an offense punishable by more than six months’ imprisonment) or when the defendant is actually sentenced to imprisonment. 446 U. S., at 229-230. Under this rationale, Baldasar’s prior misdemeanor conviction was invalid and could not be used for enhancement purposes because the initial misdemeanor was punishable by a prison term of more than six months.
Justice Powell authored the dissent, in which the remaining three Members of the Court joined. The dissent criticized the majority’s holding as one that “undermines the rationale of Scott and Argersinger and leaves no coherent rationale in its place.” Id., at 231. The dissent opined that the majority’s result misapprehended the nature of enhancement statutes that “do not alter or enlarge a prior sentence,” ignored the significance of the constitutional validity of the first conviction under Scott, and created a “hybrid” conviction, good for the punishment actually imposed but not available for sentence enhancement in a later prosecution. [745] 446 U. S., at 232-233. Finally — and quite presciently — the dissent predicted that the Court’s decision would create confusion in the lower courts. Id., at 234.
In Marks v. United States, 430 U. S. 188 (1977), we stated that “[w]hen a fragmented Court decides a case and no single rationale explaining the result enjoys the assent of five Justices, ‘the holding of the Court may be viewed as that position taken by those Members who concurred in the judgments on the narrowest grounds ....’” .Id., at 193, quoting Gregg v. Georgia, 428 U. S. 153, 169, n. 15 (1976). This test is more easily stated than applied to the various opinions supporting the result in Baldasar. A number of Courts of Appeals have decided that there is no lowest common denominator or “narrowest grounds” that represents the Court’s holding. See, e. g., United States v. Castro-Vega, 945 F. 2d 496, 499-500 (CA2 1991); United States v. Eckford, 910 F. 2d 216, 219, n. 8 (CA5 1990); Schindler v. Clerk of Circuit Court, 715 F. 2d 341, 345 (CA7 1983), cert. denied, 465 U. S. 1068 (1984). Another Court of Appeals has concluded that the holding in Baldasar is Justice Blackmun’s rationale, Santillanes v. United States Parole Comm’n, 754 F. 2d 887, 889 (CA10 1985); yet another has concluded that the “consensus” of the Baldasar concurrences is roughly that expressed by Justice Marshall’s concurring opinion. United States v. Williams, 891 F. 2d 212, 214 (CA9 1989). State courts have similarly divided.10 The Sentencing Guidelines have also reflected uncertainty over Baldasar.11 We think it not useful [746] to pursue the Marks inquiry to the utmost logical possibility when it has so obviously baffled and divided the lower courts that have considered it. This degree of confusion following a splintered decision such as Baldasar is itself a reason for reexamining that decision. Payne v. Tennessee, 501 U. S. 808, 829-830 (1991); Miller v. California, 413 U. S. 15, 24-25 (1973).
Five Members of the Court in Baldasar — the four dissenters and Justice Stewart — expressed continued adherence to Scott v. Illinois, 440 U. S. 367 (1979). There the defendant was convicted of shoplifting under a criminal statute which provided that the penalty for the offense should be a fine of not more than $500, a term of not more than one year in jail, or both. The defendant was in fact fined $50, but he contended that since imprisonment for the offense was authorized by statute, the Sixth and Fourteenth Amendments to the United States Constitution required Illinois to provide trial counsel. We rejected that contention, holding that so long as no imprisonment was actually imposed, the Sixth Amendment right to counsel did not obtain. Id., at 373-374. We reasoned that the Court, in a number of decisions, had already expanded the language of the Sixth Amendment well beyond its obvious meaning, and that the line should be drawn between criminal proceedings that resulted in imprisonment, and those that did not. Id., at 372.
We adhere to that holding today, but agree with the dissent in Baldasar that a logical consequence of the holding is that an uncounseled conviction valid under Scott may be re-
[747] lied upon to enhance the sentence for a subsequent offense, even though that sentence entails imprisonment. Enhancement statutes, whether in the nature of criminal history provisions such as those contained in the Sentencing Guidelines, or recidivist statutes that are commonplace in state criminal laws, do not change the penalty imposed for the earlier conviction. As pointed out in the dissenting opinion in Baldasar, “[t]his Court consistently has sustained repeat-offender laws as penalizing only the last offense committed by the defendant. E. g., Moore v. Missouri, 159 U. S. 673, 677 (1895); Oyler v. Boles, 368 U. S. 448, 451 (1962).” 446 U. S., at 232.
Reliance on such a conviction is also consistent with the traditional understanding of the sentencing process, which we have often recognized as less exacting than the process of establishing guilt. As a general proposition, a sentencing judge “may appropriately conduct an inquiry broad in scope, largely unlimited either as to the kind of information he may consider, or the source from which it may come.” United States v. Tucker, 404 U. S. 443, 446 (1972). “Traditionally, sentencing judges have considered a wide variety of factors in addition to evidence bearing on guilt in determining what sentence to impose on a convicted defendant.” Wisconsin v. Mitchell, 508 U. S. 476, 485 (1993). One such important factor, as recognized by state recidivism statutes and the criminal history component of the Sentencing Guidelines, is a defendant’s prior convictions. Sentencing courts have not only taken into consideration a defendant’s prior convictions, but have also considered a defendant’s past criminal behavior, even if no conviction resulted from that behavior. We have upheld the constitutionality of considering such previous conduct in Williams v. New York, 337 U. S. 241 (1949). We have also upheld the consideration of such conduct, in connection with the offense presently charged, in McMillan v. Pennsylvania, 477 U. S. 79 (1986). There we held that [748] the state could consider, as a sentence enhancement factor, visible possession of a firearm during the felonies of which defendant was found guilty.
Thus, consistently with due process, petitioner in the present case could have been sentenced more severely based simply on evidence of the underlying conduct that gave rise to the previous DUI offense. And the state need prove such conduct only by a preponderance of the evidence. Id., at 91. Surely, then, it must be constitutionally permissible to consider a prior uncounseled misdemeanor conviction based on the same conduct where that conduct must be proved beyond a reasonable doubt.
Petitioner contends that, at a minimum, due process requires a misdemeanor defendant to be warned that his conviction might be used for enhancement purposes should the defendant later be convicted of another crime. No such requirement was suggested in Scott, and we believe with good reason. In the first place, a large number of misdemeanor convictions take place in police or justice courts which are not courts of record. Without a drastic change in the procedures of these courts, there would be no way to memorialize any such warning. Nor is it at all clear exactly how expansive the warning would have to be; would a Georgia court have to warn the defendant about permutations and commutations of recidivist statutes in 49 other States, as well as the criminal history provision of the Sentencing Guidelines applicable in federal courts? And a warning at the completely general level — that if he is brought back into court on another criminal charge, a defendant such as Nichols will be treated more harshly — would merely tell him what he must surely already know.
Today we adhere to Scott v. Illinois, supra, and overrule Baldosar.12 Accordingly we hold, consistent with the Sixth [749] and Fourteenth Amendments of the Constitution, that an uncounseled misdemeanor conviction, valid under Scott because no prison term was imposed, is also valid when used to enhance punishment at a subsequent conviction.
The judgment of the Court of Appeals is therefore
Affirmed.