Wisconsin Sen. Ron Johnson is in Missouri hoping to help a man with a similar background score a similar victory.
Johnson was attending a fundraiser and campaign event Wednesday for John Brunner, one of three prominent Republicans seeking to challenge Democratic Missouri Sen. Claire McCaskill in November.
A Brunner spokesman said the campaign hopes to raise $50,000 from the fundraiser in suburban St. Louis.
Two of the three Republican candidates running to challenge Senator Claire McCaskill in November squared off Tuesday in the first of what is sure to be several debates before the primary election.