Sens. Ted Cruz and Marco Rubio have been sparring over national security and immigration policy as their rivalry intensifies in the Republican presidential primary race.

Now their conflict is moving to Iowa and a powerful evangelical constituency that Rubio is making a play for, months after rivals sank roots.

Cruz and Rubio appear Friday with other candidates at a forum hosted by an Iowa Christian organization that is expected to draw roughly 1,500 people. Ben Carson has led in some recent Iowa polls and will attend, too.

Cruz is in a strong position because he’s got support from pastors around the state and has spent much time in Iowa. But Rubio is about to embark on a five-day tour and spend time meeting pastors.

(Copyright (c) 2015 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)

Join our Newsletter for the latest news right to your inbox