Who is running for president in 2016?

Twelve Republicans have announced they will compete for the GOP nomination in 2016. The latest entry to the race is businessman and television personality Donald Trump.

Declared Republican candidates (2/2)

Twelve Republicans have announced they will compete for the GOP nomination in 2016. The latest entry to the race is businessman and television personality Donald Trump.

Potential Republican candidates

Four Republican governors -- Louisiana's Bobby Jindal, Wisconsin's Scott Walker, New Jersey's Chris Christie and Ohio's John Kasich -- are considering presidential bids.

Republicans not running

Mitt Romney, the 2012 GOP nominee, said he would not run for president a third time after considering another bid. Former U.S. Ambassador to the United Nations John Bolton also passed.

Declared Democratic candidates

So far, former Secretary of State Hillary Clinton has three Democratic challengers: Bernie Sanders, an independent senator from Vermont, former Maryland Gov. Martin O'Malley, and former Rhode Island senator and governor -- and onetime Republican -- Lincoln Chafee.

Potential Democratic candidates

Former Virginia Sen. Jim Webb and Vice President Joe Biden have expressed an interest in the 2016 race.

Democrats not running

Despite being urged on by a fervent fan base, Massachusetts Sen. Elizabeth Warren, D-Massachusetts, has repeatedly said she is not running for president.