Chris Christie and Vivek Ramaswamy went after each other during the fourth Republican presidential debates in one of the most heated fights yet.

Learn more about what to expect in the fourth Republican debate tonight on NewsNation, including major topics of interest, head-to-head arguments and more.

With Trump nearing 80 years old and facing legal issues, some Republicans believe an alternative might have a chance by finishing a decisive second.

Florida Gov. Ron DeSantis and California Gov. Gavin Newsom duked it out in a roughly two-hour debate on Thursday on Fox News, with Sean Hannity as the moderator.

Nikki Haley sees her home state as a launchpad. It could become her campaign's crash site, if Trump's longtime strength there can't be overcome.

Pennsylvania Gov. Josh Shapiro sat with NBC News for an interview to discuss his first year in office, the 2024 race in his state and Israel-Hamas war.

The first debate is Sept. 16 at Texas State University in San Marcos, followed by Oct. 1 at Virginia State University and Oct. 9 at the University of Utah.

Republicans see an opportunity to take advantage of the divide between Democrats on Israel — but not by direct appeals on the war to these voters.

Republican presidential hopefuls are out for blood — literally.

Tim Scott’s sudden departure from the presidential race won’t come with an endorsement anytime soon. But Scott’s supporters are looking for what’s next.

Trump's top two rivals for the Republican nomination criticized him gingerly at an NBC News debate as they continued to separate themselves from the rest of the field.