[2] Prior to 2020 reapportionment, he represented District 49, which included portions of Larimer and Weld counties in northern Colorado.

[3] At the time of his election to the Colorado House of Representatives, Lynch served as the president of The Western Heritage Company.

In the June 2020 primary election, he defeated Republican State Senator Vicki Marble, winning 67.02% of the total votes cast.

[7] In the 2020 general election, Lynch defeated his Democratic Party opponent, winning 61.05% of the total votes cast.

[10] However, he resigned as minority leader on January 24, 2024, after it emerged that he was on probation for a previously undisclosed DUI arrest, during which Lynch was cited for driving 90 mph and reaching for a firearm after being instructed not to do so.