HARRISBURG, Pa. (AP) — The student protest movement disrupting university campuses, classes and graduation ceremonies over the war in Gaza is also roiling Senate contests across the nation as Democrats tread cautiously over an internal divide and Republicans play up their rivals’ disagreements.

The political impact of the protests on the White House campaign has drawn considerable attention, with opposition to President Joe Biden’s handling of the Israel-Hamas war reverberating from Columbia to UCLA. The fast-evolving landscape of the demonstrations is shaping pivotal Senate races, too.

Tent encampments have popped up at universities in many states where Democrats this election year are defending seats essential to maintaining the party’s razor-thin Senate majority. At some schools, police crackdowns and arrests have followed.

The protests have sharpened the campaign rhetoric in Pennsylvania, Nevada, Ohio and Michigan, among other places. Republican candidates in California and Florida have stepped up their criticism of the Democratic president for the U.S. response to the war or for chaotic scenes on American campuses.