Hoosiers ready to choose party candidates in Indiana primaries [Video]

The most-watched is the GOP race for governor, a six-way competition of office-seekers who all have cast themselves as outsiders in an appeal to conservative voters.

INDIANAPOLIS — In deep red Indiana, where Republicans hold a supermajority in both chambers of the state legislature and most top offices are held by GOP politicians, the May 7 primary will determine the outcome of the general election in many races.

The most-watched is the GOP race for governor, a six-way competition of office-seekers who all have cast themselves as outsiders in an appeal to conservative voters.

Indiana also will send at least three new representatives to the U.S. House following a series of retirements.

Here’s a look at the key races:

GOVERNOR

Six Republicans are vying for the seat being vacated by outgoing Gov. Eric Holcomb, who is term-limited. Holcomb has not endorsed a candidate.

The race is the most expensive primary in Indiana history, with about $20 million spent …