Indiana GOP Senate candidate Luke Messer is calling on Democratic Sen. Joe Donnelly to repudiate Democratic Sens. Dianne Feinstein and Dick Durbin for "anti-Catholic" and "anti-religious" remarks made during a Senate Judiciary Committee hearing last week.

"Today, I am calling on Senator Donnelly to return the campaign contributions from Senator Feinstein and Senator Durbin, and pledge to not take any more money or attend any fundraisers with Feinstein and Durbin until they both apologize," Messer said in a statement on Monday. "Bigotry targeted at someone's religion is beyond the pale."

Feinstein and Durbin grilled 7th Circuit Court of Appeals nominee Amy Coney Barrett, a Notre Dame law professor, over her Catholic faith and practice of it, during a hearing last week. Barrett would be the first Hoosier woman on the 7th Circuit Court of Appeals if confirmed.

Messer said Monday if Donnelly does not condemn Feinstein and Durbin, "it will serve as more evidence he is out of step with Hoosiers and wedded to the liberal special interests that fund his campaigns. Amy Coney Barrett is highly qualified and she shouldn't be ridiculed for her Catholic beliefs."

Messer, who represents the congressional district Vice President Mike Pence once represented, is competing against a handful of other Republicans for the GOP nomination to square off against Donnelly in 2018.