“The lights are on in the White House, but no one’s at home.” “This guy is destroying the country.” “Put the Twitter away.” President Trump is facing Republican challengers to his re-election campaign. Joe Walsh, Bill Weld and Mark Sanford. They don’t have much of a chance at securing their party’s nomination, but primary challenges can lead to problems for the incumbent. So who’s trying to take Trump on? First up: Joe Walsh. “These are not conventional times. These are urgent times. Let’s be real: These are scary times.” A one-term Tea Party congressman who represented a Chicago suburb from 2011 to 2013. “Pisses me off!” His style? It’s aggressive. Even with his constituents. “Quiet for a minute! Or I’m going to ask you to leave.” He is also known for his offensive tweets. “I wouldn’t call myself a racist, but I would say, John, I’ve said racist things on Twitter.” He’s shared his far-right views on his nationally syndicated radio show. “When he was elected to Congress, he showed up in Washington and refused to play by their rules.” In a recent program, he slammed President Trump for his handling of immigration. “Donald Trump has royally screwed this thing up.” His show is going off the air due to FCC rules on airtime rights for presidential candidates. So why is he running? “All Trump cares about is himself.” “He’s a horrible human being.” “He’s nuts, he’s erratic, he’s incompetent!” Critics have said the same about him. Next: Bill Weld. He was the first to announce his run against President Trump. “I would be ashamed of myself if I didn’t raise my hand and run.” Weld is a lawyer and former Justice Department official. He was the governor of Massachusetts during the ’90s, and has switched party loyalties a few times, endorsing Barack Obama for president in 2008 over John McCain, and then supporting Mitt Romney in 2012. He ran as a libertarian vice presidential candidate in 2016. “I hope to see the Republican Party assume once again the mantle of being the party of Lincoln.” Weld is a fiscal conservative, but socially liberal. He supports abortion rights, same-sex marriage and legalizing marijuana. He’s been campaigning in New Hampshire and Iowa, hoping to best Trump in those early primary contests. “I think we’re in something of an inflection point.” And the former governor of South Carolina, Mark Sanford, is also running. “We need a change in spending, debt and deficits, and we need it now.” He’s a vocal critic of President Trump, and served a total of six terms in the House of Representatives. Ultimately, he lost his seat after a primary challenge by a Trump-backed candidate. His second term as South Carolina governor was stained by a scandal involving an extramarital affair. Trump referenced this scandal in a tweet mocking all three Republican candidates running against him. So what are their chances at winning? Not good. As of now, Trump’s approval rating is very high among Republicans. However, primary challengers in recent decades have shown that they can leave the incumbent wounded in the general election.