When Jeb Bush finally says he’s running for president on Monday, he’ll begin the campaign with much to prove.

Back in December, the former Florida governor said he was exploring a 2016 run. That announcement alone had the power to kick off the campaign.

Yet Bush’s supporters had hoped that by now, he’d be in a commanding position in a crowded Republican field.

Instead, he hasn’t broken away.

The 62-year-old Bush plans to make his candidacy official with a speech at Miami Dade College, the nation’s largest university.

He’s one of 11 major Republican’s running for the nomination.

Ohio Gov. John Kasich and a few others are still deciding whether to jump in – possibly swelling the field to almost 20.