SENATE BATTLEGROUND MAP: The race for control of the Senate is as tight as it can be

As of Tuesday, candidates are separated by 3 points or less in six races.

  • Polling shows Republican candidate, Rep. Kevin Cramer building his lead over a Democratic incumbent, Sen. Heidi Heitkamp, in North Dakota. In Missouri, Republican Josh Hawley holds a slim lead over another Democratic incumbent, Sen. Claire McCaskill.
  • Meanwhile, Democratic candidates Kyrsten Sinema and Jacky Rosen hold slim leads for seats currently under GOP control in Arizona and Nevada.
  • In five states won by President Donald Trump in 2016, Democratic incumbents hold substantial leads over their opponents: Sens. Sherrod Brown of Ohio, Bob Casey of Pennsylvania, Joe Manchin of West Virginia, Debbie Stabenow of Michigan, and Tammy Baldwin of Wisconsin.

Entering the midterms, Republicans hold a 51-to-49 seat majority in the upper chamber of Congress.

Election Day is November 6. We'll continue to update this map in the weeks leading up to it.