Indiana U.S. Sen. Joe Donnelly and former Vice President Joe Biden will visit Hammond, Indiana next week to encourage supporters to head to the polls, Donnelly's campaign said in a news release Thursday.

A rally will be held Friday, Oct. 12 at the Hammond Civic Center in northern Indiana. It's aimed at spurring Donnelly's supporters to vote early and recruit new volunteers for the Indiana Democratic Coordinated Campaign, the release said.

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Donnelly, a Democrat, will be on the ballot in November as the incumbent. He's being challenged by Republican Mike Braun and Libertarian Lucy Brenton. Donnelly is considered one of the more vulnerable Democrats in the U.S. Senate.

It won't be the first time Biden publicly supported Donnelly in Indiana. Biden came to Indianapolis in January to hold a fundraiser for Donnelly, according to the campaign.

“It’s an honor to have Vice President Biden on the campaign trail with me in Northwest Indiana, and I’m excited to stand on stage with him once again to spread a positive message for Hoosiers,” Donnelly said in the news release.

Biden will be in Hammond on the same day Vice President Mike Pence is slated to return to Indiana to speak at a state Republican Party fundraising event in Indianapolis.

Call IndyStar reporter Crystal Hill at 317-444-6094. Follow her on Twitter: @crysnhill.

The Associated Press contributed to this report.