Former state Rep. Janak Joshi on Friday joined the field of Republicans hoping to challenge Democratic U.S. Rep. Yadira Caraveo in Colorado’s 8th Congressional District. Vowing he’ll be “big government’s worst enemy,” the former physician, who represented Colorado Springs districts for three terms last decade in the legislature, said his unabashedly conservative track record makes him the best candidate to win the battleground seat, which could decide which party controls the U.S. House of Representatives after this year’s election.