On September 30, 2022, Lynch was arrested on suspicion of drunk driving and possessing a firearm while intoxicated. He pleaded guilty to both charges and was sentenced in February of 2023 to 18 months of probation, with monitored sobriety. He also received a deferred sentence for the weapons charge but was barred from possessing firearms and ordered to complete a handgun safety course. On January 17, 2024, Lynch told the Associated Press, “I just made a mistake, and you don’t learn from success, you learn from failure. I’m a non-drinker today and plan on staying that way. I own it, and thank God nobody got hurt.” On January 24, 2024, Lynch announced his resignation as Colorado state House Minority Leader. This announcement followed two failed no-confidence votes by the Republican caucus in the Colorado state House to remove Lynch from his position on account of his 2022 arrest.