Iowa voters will decide whether three state Supreme Court justices who ruled in favor of gay marriage should keep their jobs.

The judges joined a unanimous decision to allow same-sex marriage in the state -- a move opponents see as judicial activism.

Now, the judges are up for renewal and, as state law requires, will appear on the ballot in November.

The Family Research Council and other family groups are encouraging voters to fire the judges.

They want to send a message that the judicial branch has no business legislating from the bench.

"It's a constant struggle to impress upon people that no matter what we do in electing good legislators at the state or federal level and electing good executives, governors or presidents, in a sense it won't be effective if one judge or one panel of judges can strike down everything that they do," explained FRC's Peter Sprigg.

The Family Research Council is leading an Iowa bus tour next week to rally voter support for the measure.