The Democratic establishment is lining up against P.G. Sittenfeld, Strickland's young primary challenger.
Clinton's favorability ratings have plunged in two critical battleground states.
Bush, Rubio, Walker and Cruz defended the law signed by Gov. Mike Pence.
“I'll announce on April 13 what I will do next,” Rubio said.
Peter Sullivan 03/30/15 04:33 PM EDT
He urged Congress to take "swift action" after a House bill was pulled in January.
Cook County Commissioner Chuy García has developed a message of economic populism in the race.
Congress typically is only in session four days a week.
Rep. Duckworth is a disabled Iraq vet and Sen. Kirk is recovering from a massive stroke.
The disabled Iraq War veteran will try to unseat first-term Sen. Mark Kirk (R-Ill.).
Clinton "decided to wipe her server clean," Reince Priebus says.