INDIANAPOLIS (AP) — Sen. Joe Donnelly is bringing in help in his effort to run up the vote in the Democratic stronghold of northwest Indiana.

Vice President Joe Biden, who has blue-collar appeal and presidential ambitions, will campaign with Donnelly Friday in this heavily industrial corner of the state.

But Biden won’t be the only vice president paying a visit to the state.

Vice President Mike Pence will be appearing at a fundraising dinner in Indianapolis around the same time to rev up support for Donnelly’s rival, Republican businessman Mike Braun.

Indiana has been a reliably red state in recent years, but the two are locked in a close race that could determine which party controls the Senate.