Former Florida governor Jeb Bush is expected to formally announce his campaign for the Republican presidential nomination on June 15 in Miami, according to a new campaign website that went live early Thursday. 'Coming soon,' Bush said on his Twitter account, linking to the new website. A companion message was posted in Spanish. Bush, the son of former president George H.W. Bush and brother of former president George W. Bush, is entering a crowded field of Republican candidates ahead of the November 2016 presidential election.