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Republicans secure Senate after flipping North Dakota

Rep. Beto Rourke of Texas, Sen. Heidi Heitkamp (D-N.D.) and Sen. Joe Manchin (D- W.V.)
Left to right: Rep. Beto O'Rourke of Texas, Sen. Heidi Heitkamp (D-N.D.) and Sen. Joe Manchin (D- W.V.) Photo: Tom Reel-Pool/Getty Images, Tom Williams/CQ Roll Call and Drew Angerer/Getty Images.

Republicans have secured the Senate majority after a series of GOP upsets in key states across the U.S., including in red states such as Indiana and North Dakota.

Between the lines: There are 10 Senate Democrats running for re-election in states that President Trump won. Their challenges explain why Republicans are already projected to keep control of the Senate.

Winning and losing red-state Senate Democrats

Winners

  • Sen. Sherrod Brown (D-Ohio)
  • Sen. Bob Casey (D-Pa.)
  • Sen. Joe Manchin (D- W.Va.)
  • Sen. Tammy Baldwin (D-Wis.)
  • Sen. Debbie Stabenow (D-Mich.)
  • Sen. Jon Tester (D-Mont.)

Losers

  • Sen. Joe Donnelly (D-Ind.)
  • Former Gov. Phil Bredesen (D-Tenn.)
  • Sen. Heidi Heitkamp (D-N.D.)
  • Rep. Beto O'Rourke (D-Texas)
  • Sen. Claire McCaskill (D-Mo.)

Other Trump state Democrats

  • Sen. Bill Nelson (D-Fla.)

Go deeper: The Senate map is trouble for Democrats in 2018

2018 midterm elections