Pence, the nation’s 48th vice president, will formally launch his bid for the Republican nomination with a video and kickoff event in Des Moines, Iowa, on Wednesday, his 64th birthday.

Pence served as a U.S. House member and governor of Indiana before becoming Trump's running mate and eventual vice president.

The hurdles Mike Pence faces as the former vice president prepares to launch a White House campaign and challenge his former boss - Donald Trump

Mr. Pence, who filed paperwork declaring his candidacy, was once a stalwart supporter and defender of Donald J. Trump, but split with his former boss after the Jan. 6 attack on the Capitol.

The hurdles Mike Pence faces as the former vice president prepares to launch a White House campaign and challenge his former boss - Donald Trump

Former Vice President Mike Pence has filed paperwork declaring his campaign for president in 2024, setting up a historic challenge to his former boss, Donald Trump

Former Vice President Mike Pence filed paperwork on Monday declaring his campaign for president in 2024, setting up a challenge