A spokesman for Mr. Rosendale declined to comment.
In those seven campaigns over 12 years, Mr. Rosendale has won five contests and lost two.
Mr. Rosendale finished three points behind Mr. Tester in that race after narrowly winning the primary with 34 percent of the vote.
Mr. Rosendale has been a frequent guest on Mr. Bannon’s “War Room” podcast, which is popular with conservatives.
A third super PAC supporting Mr. Sheehy, known as More Jobs, Less Government, has been underwritten by a few wealthy Wall Street executives.
Persons:
Matt Rosendale, torching, Jon Tester, Tester, Donald J, Trump, Tim Sheehy, Tester’s, Steve Daines, Sheehy, Daines, John Barrasso of, Marjorie Taylor Greene, Trump’s, hasn’t, Rachel Leathe, Rosendale, Alex Bruesewitz, Chad F, Donald Trump Jr, Bruesewitz, “, Ted Cruz, “ I’ve, he’s, ”, Biden, Caroline Wren, Matt Gaetz, Gaetz, Kevin McCarthy, McCarthy, Greene, Stephen K, Bannon, Bannon’s, Mr, Mitch McConnell, Karl Rove —, Kenneth Griffin, Paul Singer, Stephen A, Schwarzman, Tony Fabrizio, Andy Surabian, Maggie Haberman
Organizations:
Senate, Montana Republicans, Republican, National Republican Senatorial Committee, Republicans, Trump, Bozeman Daily Chronicle, Associated Press, Montana Republican, U.S . House, Montana Senate, Mr, Trump White House, Navy SEAL, Republicans —, Fund, Wall Street, PAC, Democratic
Locations:
Montana, Rosendale, Helena, Washington, John Barrasso of Wyoming, Georgia, Iowa, Bozeman, MAGA, U.S, Ted Cruz of Texas, Arizona and Ohio