GOP presidential candidate Vivek Ramaswamy said he would support raising the voting age to 25, unless a voter were to serve in the military or pass a test.
At an Iowa Faith and Freedom Coalition event, former vice president Mike Pence rejected the idea that abortion laws should be left solely to each state.
Haley is set to deliver a speech Tuesday aiming to put her stamp on the issue as an unapologetic antiabortion voice who can nonetheless win back moderates who other Republican candidates alienated in the midterms.
They are lukewarm about picking Biden as their nominee, but many believe he may be the best hope of preventing a second Trump term and fighting extremism.