Article snippet: Joe Walsh, a former Illinois congressman and tea party favorite turned radio talk show host, announced a challenge Sunday to President Donald Trump for the Republican nomination in 2020, saying the incumbent is unfit for office and must be denied a second term. ‘‘He’s nuts. He’s erratic. He’s cruel. He stokes bigotry. He’s incompetent. He doesn’t know what he’s doing,’’ Walsh told ABC’s ‘‘This Week.’’ The longshot portrayed himself as a legitimate alternative in party where he said many are opposed to Trump but are ‘‘scared to death’’ of saying so publicly. His campaign slogan: ‘‘Be brave.’’ Polls shows Trump is backed by most Republican voters, and the lone rival already in the race is former Massachusetts Gov. Bill Weld, the 2016 Libertarian Party vice presidential nominee who is regarded as fiscally conservative but socially liberal. Undeterred from pressing ahead with his candidacy, Walsh said, ‘‘I think this thing ... will catch on like wildfire.’’ The former Trump booster added: ‘‘I'm a conservative. And I think there’s a decent chance to present to Republican voters a conservative without all the baggage.’’ Walsh narrowly won a House seat from suburban Chicago in the 2010 tea party wave but lost a 2012 reelection bid and has since hosted a radio talk show. He has a history of inflammatory statements regarding Muslims and others and declared just before the 2016 election that if Trump lost, ‘‘I'm grabbing my musket.’’ But he has since soured on Trump, crit... Link to the full article to read more