Eleven Republican and three Democratic candidates are gearing up for the Iowa caucus, which is just seven days away.

Sunday's Iowa polls indicate a tight race for the Democratic nomination. While Donald Trump leads the Republican pack by eleven points, Bernie Sanders edges Hillary Clinton by just one point.

The caucus, which will take place Monday, February 1st, works a little differently than most primaries. Voters will convene in groups to make their selections and elect temporary delegates to "call" the caucus. Iowans defend the caucus model, saying it gives more power to grassroots activists and party organizers. Others say it is unrepresentative of the state's interests.

Since 1976, five out of seven Democratic Iowa caucus winners went on to get the Democratic nomination. Only three out of seven Republican winners went on to get the Republican nomination.

Caucus voters could be receiving new information about Democratic contender Clinton in the next week, if a reporter is successful in ordering the State Department to stop delaying the release of Clinton's private emails from her term as Secretary of State.

She faces a tough opponent in Sanders, who leads in New Hampshire by 19 points.

President Obama weighed in on the difficulties facing the Clinton campaign in an interview with Politico's Glenn Thrush.

"Bernie came in with the luxury of being a complete long shot and just letting loose," the President said. "I think Hillary came in with both the privilege — and burden — of being perceived as the front-runner. … You're always looking at the bright, shiny object that people haven't seen before — that's a disadvantage to her."

The Republican race is not as tight. Trump, whom Sarah Palin endorsed last week, has 34 percent of the Republican vote. Ted Cruz holds only 23 percent, and Rubio trails both candidates at 12 percent.

Donald Trump possesses no endorsements from acting governors or congressional representatives. These endorsements have traditionally been indicators of success in early primaries. Jeb Bush has the most endorsements in the Republican race, but falls severely behind in the Iowa polls. Hillary Clinton has the most endorsements overall.

The New York Times reported Saturday that both parties might be getting a run for their money in Michael Bloomberg: a billionaire former mayor of New York City. Bloomberg commissioned a poll in December to see how he might fare against Trump and Clinton should he run as an independent candidate, and instructed his advisers more recently to draw up campaign plans. No independent has ever been elected to the White House.