Wadhams exit leaves state Sen. Ted Harvey of Highlands Ranch as the frontrunner.
Wadhams has told the press that he was frustrated by criticism of his handling of the party, and by "nuts who have no idea what the state party's role is." Wadhams went on to say that Colorado Republicans increasingly push for extremely conservative candidates. But extreme candidates can't pick up independent voters, and thus lose statewide elections, he said.
Wadhams was strongly criticized for the November election, which turned into a circus for Republicans. The party ended up losing both a U.S. Senate race and the gubernatorial contest despite a nationwide Republican surge.
Wadhams has not announced what his next career move will be.
Read more at the Denver Post.