EVANSVILLE, Ind. –  City officials and businesses in southwestern Indiana are preparing for heavy security and restricted traffic ahead of President Donald Trump’s campaign rally tonight.

Trump plans to attend a fundraiser at Old National Events Plaza in Evansville before the rally at Ford Center, where he’ll endorse Republican candidate Mike Braun’s U.S. Senate campaign.

Braun is facing Democratic Sen. Joe Donnelly, who has been considered a vulnerable Senate incumbent on the ballot this year.

The rally has already filled up the convention center’s hotel and forced the cancellation of a Red Hot Chili Peppers concert. Merchants near the rally have said they hope the crowd stays under control and that visitors will boost business.

Area organizers have planned at least two protests during the event.