Sam Rohrer, one of five GOP candidates for U.S. Senate, has received the endorsement from businessman and former presidential candidate Herman Cain.

Sam Rohrer, GOP candidate for U.S. Senate

Cain endorsed Rohrer at the Pennsylvania Leadership Conference in Harrisburg, an event at which Rohrer, a former state House member, won a straw poll among the Republican candidates.

Rohrer also has launched what he calls a “Red Truck Tour,” a month-long, 100-stop trip across Pennsylvania in a pickup.

Cain joined Rohrer at the first stop on the tour, at – where else? – a pizza shop in Harrisburg on Saturday. Cain is the former CEO of Godfather’s Pizza.

Former GOP presidential candidate Herman Cain. Carolyn Kaster/AP.

Rohrer will be in Erie on Wednesday morning along with GOP opponents Marc Scaringi, Tom Smith and Steve Welch at a forum sponsored by the Manufacturer & Business Association.

That event starts at 9 a.m. at the association’s conference center, 2171 W. 38th St.

The winner of the April 24 primary will face U.S. Sen. Bob Casey in the fall campaign.

– John Guerriero