2016 Presidential Race

Hillary Clinton's campaign went to great lengths to keep her events in Iowa this week intimate. That's easier said than done when the candidate is one of the world's most famous politicians.

More money is expected to be raised and spent in 2016 than in any election in U.S. history. But, as candidates ditch old ways of campaigning, more of it is expected to be undisclosed and untraceable.

Virginia found 1-in-5 of its touchscreen machines vulnerable to attack with passwords as easy as "abcde." As voting equipment ages, new concerns are being raised.

As Clinton launches into her second presidential campaign, she'll be reintroducing herself to voters who largely think they have her figured out.

On gay rights and immigration, Republicans running for president, like Florida Sen. Marco Rubio, are trying to navigate a tricky course between their party and the country at-large.

The junior Republican senator from Florida is expected to jump into the race for the presidency Monday. He has some strengths — but also some hurdles to overcome.