State of Maine v. David MacKenzie

2025 ME 79
CourtSupreme Judicial Court of Maine
DecidedAugust 19, 2025
DocketPen-24-467
StatusPublished

This text of 2025 ME 79 (State of Maine v. David MacKenzie) is published on Counsel Stack Legal Research, covering Supreme Judicial Court of Maine primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
State of Maine v. David MacKenzie, 2025 ME 79 (Me. 2025).

Opinion

MAINE SUPREME JUDICIAL COURT Reporter of Decisions Decision: 2025 ME 79 Docket: Pen-24-467 Argued: June 5, 2025 Decided: August 19, 2025

Panel: STANFILL, C.J., and MEAD, HORTON, CONNORS, LAWRENCE, DOUGLAS, and LIPEZ, JJ.

STATE OF MAINE

v.

DAVID MACKENZIE

LIPEZ, J.

[¶1] David MacKenzie appeals from a judgment of conviction for

aggravated operating under the influence (OUI), aggravated assault, and

leaving the scene of a motor vehicle accident entered by the trial court

(Penobscot County, A. Murray, J.) after a jury trial. MacKenzie contends that the

court abused its discretion when it admitted in evidence expert testimony

about his estimated blood-alcohol concentration (BAC) offered to prove that he

“[o]perate[d] a motor vehicle . . . [w]hile having an alcohol level of 0.08 grams

or more of alcohol per 100 milliliters of blood or 210 liters of breath,”

29-A M.R.S. § 2411(1-A)(A) (2025). MacKenzie also argues that the evidence

was insufficient to support his conviction for aggravated assault. We affirm the

judgment. 2

I. BACKGROUND

A. Facts

[¶2] “Viewing the evidence in the light most favorable to the State, the

jury could rationally have found the following facts beyond a reasonable

doubt.” State v. Souther, 2017 ME 184, ¶ 2, 169 A.3d 927 (quotation marks

omitted).

[¶3] On July 15, 2023, over the course of about six hours, MacKenzie

consumed twelve twenty-two-ounce Michelob Ultra beers (equivalent to

twenty-two twelve-ounce beers)1 and a basket of boneless chicken wings at a

restaurant in Brewer. Shortly after 8:30 p.m., MacKenzie left the restaurant, got

into his vehicle, and drove away alone.

[¶4] Less than ten minutes later, MacKenzie struck an

eighty-seven-year-old man who was pushing a wheelbarrow full of hedge

clippings across the street. The victim landed on MacKenzie’s windshield,

cracking it. The victim was then carried on the hood of the car before falling to

the pavement. Witnesses to the collision heard MacKenzie shouting at the man

to get off his car. After hitting the victim, MacKenzie stopped only briefly before

Put another way, MacKenzie drank approximately two gallons of beer during his afternoon at 1

the bar, which was captured on video. 3

leaving the scene of the accident. The victim sustained an open ankle fracture,

a pelvic fracture, and injuries to his spine and spleen. The ankle fracture

required surgery and a resulting lengthy recovery.

[¶5] Several calls to 9-1-1 alerted the police to the accident. One of those

calls came from MacKenzie’s phone, which automatically dialed 9-1-1 at

8:39 p.m. GPS data later obtained from MacKenzie’s vehicle showed his car at

the accident site at that time.

[¶6] The responding officers called in a crash reconstructionist, who

concluded that MacKenzie was driving over the speed limit and had crossed

into the opposite lane when his car hit the victim. The reconstructionist also

opined that MacKenzie’s alcohol consumption was a contributing factor to the

crash.

B. Procedure

[¶7] Several days after the accident, the police identified MacKenzie as

the suspected driver. On July 21, 2023, the State charged him by criminal

complaint with aggravated assault and leaving the scene of an accident

involving serious bodily injury or death. On September 27, 2023, a grand jury

indicted him on charges of aggravated criminal OUI (Class C), 29-A M.R.S.

§ 2411(1-A)(D)(1) (Count 1), aggravated assault (Class B), 17-A M.R.S. 4

§ 208(1)(A) (2025) (Count 2), and leaving the scene of an accident involving

serious bodily injury or death (Class C), 29-A M.R.S. § 2252(5) (2025) (Count 3).

The State sought and obtained a superseding indictment on March 27, 2024,

charging the same three counts and adding a charge of OUI with one prior OUI

conviction (Class D), 29-A M.R.S. § 2411(1-A)(B)(1) (Count 4). For each of the

OUI charges, the State alleged in the alternative, as permitted by statute, that

MacKenzie “operate[d] a motor vehicle while under the influence of intoxicants

or while having an alcohol level of .08 grams or more of alcohol per

100 milliliters of blood or 210 liters of breath.” See id. § 2411(1-A)(B)(1),

(D)(1).

[¶8] Because of the delay between the accident and law enforcement’s

first contact with MacKenzie, the police were unable to perform a chemical test

to determine his BAC at the time of the crash. The State informed MacKenzie

prior to trial that it instead intended to offer a State chemist’s opinion that

according to the Widmark formula, which “produces an estimate of a person’s

blood alcohol content based upon the absorption and elimination rates of

alcohol in the human body,” Souther, 2017 ME 184, ¶ 4 n.2, 169 A.3d 927

(quotation marks omitted), MacKenzie’s BAC exceeded .08 when he struck the

victim. 5

[¶9] MacKenzie moved in limine to exclude the chemist’s opinion. After

a hearing at which the chemist testified that she estimated MacKenzie’s BAC to

be “around a [.]20” at the time of the accident, the court ordered that it would

permit the State “to attempt to establish blood alcohol level by an opinion as

opposed to a chemical test,” but that the chemist should not “give an exact

number.” The court also prohibited the State from relying on the statutory

presumption set forth in 29-A M.R.S. § 2432(3) (2025) that a person with a BAC

of .08 or more “is presumed to be under the influence of intoxicants.”

[¶10] At trial, the State chemist opined that at the time of the accident,

MacKenzie’s BAC would have been higher than .08, and that generally people

with that level of alcohol in their system are impaired.

[¶11] The jury found MacKenzie guilty of all charges. MacKenzie timely

filed a motion for a judgment of acquittal, which the court denied after a

hearing. See M.R.U. Crim. P. 29(b). The court sentenced MacKenzie to six years’

imprisonment with all but fifteen months suspended and three years of

probation on Count 2, and concurrent terms of fifteen months’ imprisonment 6

each on Counts 12 and 3.3 MacKenzie timely appealed. See M.R.

App. P. 2B(b)(2)(B).

II. DISCUSSION

A. Admission of BAC Opinion Testimony

[¶12] MacKenzie argues that the court erred in two ways when it

admitted the testimony of the State chemist who relied upon the Widmark

formula for her conclusions: first, that a chemical test is the statutorily-required

method of proving a defendant’s BAC; and second, that the chemist’s estimate

was unreliable because the Widmark formula is not sufficiently specific to

MacKenzie. We address each argument in turn.

1. The OUI statutes do not preclude admission of opinion testimony to prove BAC.

[¶13] First, MacKenzie contends that the statutes criminalizing

operating under the influence permit a chemical test—and only a chemical

test—to prove BAC. He invokes sections 2431 and 2432 of Title 29-A, which

The court merged Count 4—OUI with a prior OUI conviction—with Count 1 for purposes of 2

sentencing. 3 The written judgment and commitment does not reflect the concurrent nature of the sentences

imposed for Counts 1 and 3.

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