The new polling data may put pressure on Trump for a standout performance in Wednesday's debate.
Twitter has partnered with CBS News to provide real-time insight and reactions for the Democratic Debate on Nov. 14.
We've compiled quotes and photos from her more than 20 years in the public eye to celebrate the former secretary of state's birthday.
Bernie Sanders issues his sharpest criticisms yet of Hillary Clinton's positions on key issues such as the Trans-Pacific Partnership, same-sex marriage and the Iraq war.
In 2001, Hillary Clinton voted for No Child Left Behind. She has since both criticized the law and promoted the fact she voted for it.
"These super PACs are a disaster," Donald Trump contends, saying Jeb Bush and all other U.S. presidential candidates should sever their relationships with them.
During a rally for Democrats on Friday, the president accused Republicans of constructing a gloomy, “entire separate reality.”
Strong Hollywood connections, dating to her years as first lady, are paying off for the Democratic front-runner, who leads in campaign contributions from celebrities.
Martin Shkreli, aka "Pharma Bro," is angry at Bernie Sanders for not accepting his campaign donation, and he's lashing out.
AFSCME, which represents state, county and municipal workers, is backing the Democratic front-runner's White House bid.
Vermont Sen. Bernie Sanders gets support from some local union workers as he battles with Hillary Clinton over national union support.
The former Rhode Island governor -- considered an extreme long shot for the White House -- has ended his presidential campaign.
Chafee barely registers in opinion polls. Former Secretary of State Hillary Clinton is the front-runner in the field of four candidates for the Democratic nomination for the November 2016 election.
Key exchanges emerged Thursday as former U.S. Secretary of State Hillary Clinton testified before a House panel investigating the 2012 terror attack in Benghazi, Libya.
The daylong Benghazi committee questioning of Hillary Clinton didn't produce many political revelations but did prompt an avalanche of tweets and memes.
Hillary Clinton's testimony in front of a House committee is unlikely to change the minds of voters who largely already know how they feel about her.
Who was the ambassador who was killed in Libya, and who sent him there?
The former U.S. secretary of state answered questions on security issues and State Department protocol from a House panel investigating a 2012 attack in Libya.
Here's why Hillary Clinton is in front of the House Benghazi Committee.
The hearings are part of the eighth investigation into the Sept. 11, 2012, attack in Libya that left a U.S. ambassador and other Americans dead.
The Republican presidential front-runner used Joe Biden's Wednesday announcement as an opportunity to hurl criticism at Clinton, the Democratic front-runner.
Vice President Joe Biden and Hillary Clinton have a long history, sometimes marked by tension.