U.S. Sen. John Thune of South Dakota will campaign for fellow Republican Deb Fischer, who is seeking Nebraska’s open U.S. Senate seat.

Thune will appear Saturday in Lincoln with Fischer, who is seeking to replace retiring Democratic U.S. Sen. Ben Nelson. She’s up against former Nebraska governor and two-term U.S. Sen. Bob Kerrey in the November election.

Thune briefly considered a run for the 2012 presidency and was mentioned for months before August as a possible vice presidential pick for Mitt Romney.

Thune will speak Saturday afternoon at Fischer’s campaign office in Lincoln.