The former vice president joins Donald Trump in the GOP primary race.
DES MOINES, Iowa -- Former Vice President Mike Pence will announce next week that he is running for president, giving a kickoff speech and releasing a campaign video on June 7 ahead of a town hall with CNN in Des Moines, Iowa, a source familiar confirms to ABC News.
Pence will be running against his old boss, Donald Trump, in the Republican primary.
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