State highest court

New Mexico Supreme Court

The 40 most recent opinions analysed by CaseDiver, newest first. Opening a case goes straight to the full opinion reader.

Recent opinions

New MexicoState v. Morgan

July 13, 2026

The New Mexico Supreme Court held that Sergeant Railey had reasonable suspicion to seize James Morgan based on dispatch information, the observed loud altercation, the apparent restraint of Morgan, and Morgan's flight.

New MexicoState v. Mendez

July 13, 2026

The Court held that Defendant preserved his challenge to Juror 6, whose voir dire statements collectively demonstrated actual bias favoring law enforcement and undermined the presumption of innocence.

New MexicoIn Re Detsoi

July 10, 2026

The Court upheld the Commission’s procedures and permanent removal of the magistrate judge. It held that the Commission had broad discretion to conduct the disciplinary hearing itself rather than appoint masters, and that combining investigative and adjudicative functions does not violate due process absent…

New MexicoState v. Schuster

July 8, 2026

The Court held that the first three speedy-trial factors weighed heavily against the State: the delay exceeded three years, the State's prolonged inaction constituted bureaucratic indifference, and Defendant repeatedly asserted his right.

New MexicoState v. Causey

July 8, 2026

The New Mexico Supreme Court affirmed suppression of firearm evidence obtained during a warrantless automobile search in Texas. It held that Article II, Section 10 of the New Mexico Constitution governs the admissibility in New Mexico courts of evidence obtained by out-of-state officers in violation of that provision…

The New Mexico Supreme Court affirmed Defendant Dorall Smith’s convictions for first-degree murder and criminal damage to property, holding that the evidence of deliberate intent was sufficient, the trial court did not abuse its discretion on DNA evidence disclosure, expert communication, autopsy photographs, bad‑acts…

New MexicoState v. Montoya

March 12, 20152015 NMSC 10

The Court affirmed Montoya’s conviction for intentional child abuse resulting in the death of a child under twelve, holding that the jury instructions, expert testimony, and evidence were legally sufficient.

New MexicoRepublican Party of New Mexico and Lynott

June 28, 20122 N.M. 324

The New Mexico Supreme Court held that, although the dispute over the requested driver's-license records was arguably moot, it would decide the scope of executive privilege under the Inspection of Public Records Act (IPRA) because the issue presents a substantial public interest.

New MexicoState v. Largo

May 21, 20121 N.M. Ct. App. 698

The Court affirmed Defendant's convictions for deliberate first-degree murder and tampering with evidence. It held that the victim's statements identifying Defendant as the shooter were nontestimonial because they were made during an ongoing emergency and were elicited primarily to enable police and emergency…

New MexicoState v. Guerra

May 10, 20121 N.M. Ct. App. 687

The Court affirmed the first-degree murder conviction, holding that Defendant was not entitled to a self-defense instruction and that the district court properly excluded untimely or minimally relevant defense evidence.

New MexicoState v. Arrendondo

May 7, 20121 N.M. Ct. App. 673

The court affirmed the convictions for first-degree murder, negligent child abuse of Jasmine, and shooting at a dwelling, but reversed the convictions for negligent child abuse of Adrian and tampering with evidence for insufficient evidence.

New MexicoState v. Tollardo

March 29, 20121 N.M. Ct. App. 535

The New Mexico Supreme Court held that a plea of guilty or no contest is a 'testimonial statement' under Crawford v. Washington, so the district court's judicial notice that two non-testifying co-defendants (the Romeros) had been convicted of conspiracy to commit second-degree murder violated Steve Tollardo's Sixth…

The court affirmed the denial of Leyva's motion to suppress. It held that unrelated questioning during a traffic stop does not violate the Fourth Amendment if it causes no measurable extension of the detention, but retained a more protective, case-specific rule under the New Mexico Constitution requiring questions to…

New MexicoBeatrice C. Romero and Michael Ferree

June 25, 2010148 N.M. 713

The New Mexico Supreme Court held that the Court of Appeals applied the correct state summary-judgment standard but incorrectly applied federal substantive antitrust law. In an oligopoly, parallel wholesale price increases are ambiguous and cannot alone support an inference of a price-fixing agreement; plaintiffs…

New MexicoJerry Alvin Kersey, Petitioner v. Timothy Hatch

April 14, 2010148 N.M. 381

The New Mexico Supreme Court held that the later felony-murder decision announced a new procedural rule because it replaced the prior fact-specific unitary-conduct analysis with a categorical bar on separate convictions for felony murder and the predicate felony.

The court held that the defendant’s traffic stop was supported by reasonable suspicion because the officer reasonably believed the defendant violated the turn-signal statute. The statute requires signaling when there is a reasonable possibility that other traffic may be affected, and the officer’s vehicle qualified as…

The New Mexico Supreme Court reversed the Court of Appeals, which had overturned Defendant's conviction for criminal sexual penetration of a minor, and held that the trial court did not abuse its discretion in admitting (1) evidence of Defendant's uncharged acts in Colorado under Rule 11-404(B) to show intent and…