Former Alaska Gov. Sarah Palin listens to guests at a clambake in Seabrook, N.H., Thursday, June 2, 2011. Palin has been visiting East coast cities this past week. (AP Photo/Charles Krupa)
(AP Photo/Charles Krupa)

Updated with the endorsement of McDaniel at 2:34 p.m.

Former Alaska governor Sarah Palin (R) is stepping up her presence on the Senate campaign landscape, endorsing Midland University President Ben Sasse (R) in Nebraska and state Sen. Chris McDaniel (R) in Mississippi Thursday.

"Ben knows how dysfunctional D.C. is. He’s witnessed firsthand the corrosive effect bad big government policies can have, and he knows that Obamacare is as bad as it gets," Palin said of Sasse in a statement on Facebook.

Palin said that McDaniel "has a proven record of fighting for conservative principles in the Mississippi State Senate." He is challenging Sen. Thad Cochran (R-Miss.).

The endorsements were Palin's second and third in the past two days. On Wednesday, she threw her support behind former state House speaker T.W. Shannon (R) in Oklahoma.

The race in Nebraska for the seat of retiring Sen. Mike Johanns (R) has divided tea party groups. Sasse has the support of the Club For Growth and the Senate Conservatives Fund. Former treasurer Shane Osborn is backed by Freedomworks. Regardless of who wins the primary, the seat is expected to remain in GOP hands.

"I asked Governor Palin to join our campaign, and I am grateful for her support today," Sasse said in a statement.