Senate race: Final debate tonight in Indiana's bruising GOP primary

The three Republicans running for U.S. Senate in Indiana will face off in their fourth and final debate Monday evening.

With just more than a week before the May 8 primary, the debate represents one last change for the candidates — Luke Messer, Todd Rokita and Mike Braun — to land a blow in what has become a bare knuckle political brawl.

The first two debates were fiery affairs with attacks right out of the gate. The third and most recent debate, just last week in Fort Wayne, was more civil, but still featured plenty of barbs.

Sign up: Get Indiana's most insightful politics news sent straight to your inbox

The final debate, organized by the nonpartisan Indiana Debate Commission, will begin at 7 p.m. at the studios of WFYI in Indianapolis. A live stream will be carried on IndyStar.com through media partner Fox59.

The debate will include questions submitted by the public and reviewed by members of the debate commission. Abdul Hakim-Shabazz, a political blogger and WIBC radio personality, will moderate the debate.

The Senate race, which has been deemed the nastiest GOP primary in the nation, will determine who gets a shot at incumbent Sen. Joe Donnelly, who is widely considered one of the most vulnerable Democrats in the Senate. The seat is one of a handful likely to determine which party controls the Senate after the November election.

Profiles from the nation's nastiest primary

Todd Rokita: Battling 'the elites,' including former GOP supporters

Luke Messer: Childhood lessons taught him perseverance

Mike Braun: Casual attire, but serious business credentials

Call IndyStar reporter Tony Cook at (317) 444-6081. Follow him on Twitter and Facebook.