Former Vice President Mike Pence, who served Donald Trump with unwavering loyalty but later turned on him after the 2021 attack on the U.S. Capitol, formally challenged his former boss for the Republican presidential nomination on Wednesday.

Former New Jersey Gov. Chris Christie filed paperwork with the Federal Election Commission, which officially triggers a 2024 Republican presidential campaign, his second White House run

Former New Jersey Gov. Chris Christie is wasting no time going after Donald Trump while launching his presidential campaign. Christie is calling the former president and current Republican primary

Eduardo Munoz/ReutersMike Pence launched his 2024 campaign Wednesday morning with the release of a video discussing his faith in the American people—but somehow neglecting to mention his biggest rival for the Republican nomination.

The GOP presidential candidate pool is getting even wilder. Another one of Trump’s supporters-turned-foes has announced his presidential candidacy for the 2024 race, just a day before former vice president Mike Pence is reported to officially announce his candidacy.