U.S. Sen. Scott Brown will swing by the Eire Pub on Saturday afternoon after lunch at Sullivan's in South Boston. Former Mayor Ray Flynn will join Brown on Castle Island.

Brown is scheduled to appear at the bellwether bar shortly after 1:30 p.m. The bar is a popular place for politicians: Pictures of visits from President Reagan and President Clinton hang on the walls.

Brown's campaign swing through Boston comes a day after Mayor Thomas Menino and Brown's Democratic challenger, Elizabeth Warren, appeared together at a Roslindale Village rally to tout Menino's endorsement.