Former Alaska Gov. Sarah Palin (R) has endorsed Midland University President Ben SasseBenjamin (Ben) Eric SasseMeet the Democratic sleeper candidate gunning for Senate in Nebraska Longer sentences won’t stop the opioid epidemic Overnight Finance: Trump floats entering Pacific trade pact he once called 'a disaster' | Senators worry over Mulvaney's power at consumer bureau | Battle for CFPB control heads to appeals court | House fails to pass balanced budget amendment MORE for Senate in Nebraska.

Sasse is one of two front-runners in a four-way Republican primary for the seat left open with Sen. Mike Johanns’s (R-Neb.) retirement.

Palin, in her endorsement, called Sasse the “clear conservative choice” in the race, citing a National Review cover story that featured Sasse and labeled him “Nebraska’s ObamaCare Nemesis.”

“Ben knows how dysfunctional D.C. is. He’s witnessed firsthand the corrosive effect bad government policies can have, and he knows that ObamaCare is as bad as it gets. Ben is a leader we need in D.C. now! He won’t forget who sent him there because his life is firmly grounded in his small town Nebraska roots,” she said, in a Facebook post.

Palin’s endorsement makes for yet another from a big-name conservative backing Sasse over his main opponent in the primary, former state Treasurer Shane Osborn.

Sens. Mike Lee (R-Utah) and Tom Coburn (R-Okla.), as well as the Club for Growth and the Senate Conservatives Fund, have all come out in support of Sasse.

Osborn has the backing of social conservative leader Phyllis Schlafly, the anti-abortion Concerned Women PAC and FreedomWorks, who is backing Osborn because it contends Sasse won’t do enough to oppose ObamaCare if elected.