Iowa’s governor and two U.S. senators say they will support Donald Trump if he’s the Republican Party’s nominee for president.

DES MOINES, Iowa (AP) — Iowa’s governor and two U.S. senators say they will support Donald Trump if he’s the Republican Party’s nominee for president.

Gov. Terry Branstad and Sens. Charles Grassley and Joni Ernst said Wednesday they will support whoever is the GOP nominee. The comments came on a day when Trump became the last remaining Republican presidential candidate.

Grassley, chairman of Senate Judiciary Committee, spoke about his support at an event in Iowa. He is facing a tough re-election race this year amid his refusal to hold hearings for President Barack Obama’s Supreme Court nominee. Grassley has defended the move, though four Democratic challengers will face off in a primary election in June.