Fillmore also previously served in the Arizona House of Representatives from 2011 to 2013 from District 23.

[1] Prior to being elected to public office, Fillmore was a small business owner and ran a chain of stores called the Weather Shack.

[1] In 2020, he proposed House Bill 2082, to "prevent public schools from penalizing employees who use incorrect pronouns for transgender students.

'"[2] After Donald Trump lost the 2020 election and refused to concede while making claims of fraud, Fillmore sponsored HB 2701, a bill which would, among other things, limit mail-in voting in Arizona as well as limit the number of voting centers in each county.

Fillmore also introduced a bill that would have allowed the Arizona legislature to overturn election results, which was rejected by Arizona House speaker Rusty Bowers.