Bernie Sanders campaign accessed Hillary Clinton's voter data
A software glitch at the Democratic National Committee made it possible and DNC responded with move that could badly hurt Sanders camp
Bernie Sanders
Quiz: How closely have you been following the 2016 election?
It's been a busy year on the campaign trail - test your knowledge of the election's twists and turns as 2015 comes to a close
Campaign says Sanders has received more than 2 million donations
The campaign announced the milestone on Wednesday, and Sanders is expected to win the endorsement of a major labor union
Poll: Clinton expands lead over Sanders in Iowa
More women said they support Clinton compared to Sanders while Sanders does better with young people
Democratic 2016 candidates call for removal of Confederate flag from Citadel
She was responding to the suspension of eight cadets who wore white pillowcases over their heads, similar to Ku Klux Klan robes
Hillary Clinton continues to lead Democratic field
New national Democratic poll shows Clinton maintaining strong lead
How big is Donald Trump's lead in South Carolina?
Two polls show him leading the Republican field, but the margins are very different
Poll: Millennials want ground troops to fight ISIS
But a much smaller percentage actually want to or have served in the military
Poll: Trump back on top, with Cruz climbing into second
New CBS News/New York Times national GOP poll shows Trump leading, with Cruz surpassing Carson; Hillary Clinton maintains lead over Bernie Sanders
In Baltimore, Sanders sharpens call for a "shift" in national priorities
He toured the Sandtown-Winchester neighborhood where Freddie Gray was arrested earlier this year
Hillary Clinton maintains double-digit lead in Iowa
The Democratic frontrunner is 22 points ahead of Bernie Sanders among likely Democratic caucus goers
Sanders wins TIME's online Person of the Year poll
The magazine plans to reveal the official TIME Person of the Year on Wednesday morning
Candidates fundraise off of Donald Trump's Muslim ban plan
Donald Trump called for "a total and complete shutdown of Muslims entering the United States" on Monday
Sanders: "Frightened" about future of the planet
The Democratic presidential candidate called out Republicans "who are more concerned about getting huge campaign contributions" than climate change
Sanders: Gun control no "magic formula" for terrorism
Democratic presidential candidate breaks from many in his own party in "Face the Nation" interview on how to handle ISIS threat
Black Lives Matter protesters cut off Donald Trump in North Carolina
His speech was interrupted at least 10 times during the rally
Hillary Clinton extends lead in Democratic race for president
Support for Clinton has jumped more than 10 percentage points since the last poll in October
Sunday: Trump, Sanders, Christie, and Morell
Tune in for the latest on the deadly shooting in San Bernardino, the 2016 election, and more
Sanders supporters take the "feel the Bern" internet challenge
Sanders supporters have started a social media campaign for people to show how they "feel the Bern"
Quiz: How well do you know Bernie Sanders?
The Vermont senator's 2016 bid has ignited a lot of enthusiasm among liberals - test your knowledge of his background and political beliefs
New Hampshire activist fights for Sanders while fighting cancer
When Janet Lang isn't working to put Bernie Sanders over the top in the New Hampshire primary, she's undergoing radiation and chemotherapy treatments
Where candidates stand on Medicare and health reform
Health care is critical for all Americans, particularly retirees, so you should know how your retirement could be impacted
New Hampshire rejects challenge to Sanders' and Trump's candidacies
Bernie Sanders, Donald Trump, Marco Rubio and Ted Cruz all faced eligibility challenges to be listed on the New Hampshire primary ballot
Poll: Hillary Clinton maintains lead over Bernie Sanders in Iowa
The results of November's Quinnipiac poll of likely Democratic caucus goers shows virtually no difference from October's poll
Martin O'Malley unveils his healthcare plan
The Democratic presidential candidate wants to expand healthcare coverage to 95 percent of people
Roy Cooper wins in North Carolina, flipping Senate seat for Democrats
Chris Pappas wins New Hampshire Senate race
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Jon Ossoff wins Georgia Senate race, keeping seat for Democrats
Ashley Moody projected to win Florida Senate election
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Parts of jet that crashed in Florida found miles away
Why some key races won't be decided on election night
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