- The 2018 US Senate elections are full of tight races, polling shows.
- Entering the midterms, Republicans hold a 51-to-49 seat majority in the upper chamber of Congress.
- A few seats changing hands could flip the body to Democratic control.
- But Democrats are faced with a challenging map.
The battle for control of the Senate is as tight as can be, RealClearPolitics polling averages show.
This week, Republicans continued to build separation from a Democratic incumbent in North Dakota while Democrats built on what was a shrinking lead in New Jersey.
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.