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12 Republicans, 4 Democrats running for president so far

12 Republicans, 4 Democrats running for president so far as White House race heats up

12 Republicans, 4 Democrats running for president so far

WASHINGTON (AP) -- Here are the candidates who have announced a 2016 run for the White House:

REPUBLICANS

Jeb Bush, former Florida governor

Ben Carson, pediatric neurosurgeon

Ted Cruz, Texas senator

Carly Fiorina, former CEO Hewlett-Packard

Lindsey Graham, South Carolina senator

Mike Huckabee, former Arkansas governor, 2008 presidential candidate

George Pataki, former New York state governor

Rand Paul, Kentucky senator

Rick Perry, former Texas governor, 2012 presidential candidate

Marco Rubio, Florida senator

Rick Santorum, former Pennsylvania senator, 2012 presidential candidate

Donald Trump, billionaire real estate developer and television personality

DEMOCRATS

Hillary Clinton, former secretary of state, New York senator and first lady

Bernie Sanders, Vermont independent senator (caucuses with Democrats)

Martin O'Malley, former Maryland governor

Lincoln Chafee, former Rhode Island governor and senator.