Who Won The First Republican Debate?

The first 2024 Republican presidential primary debate is in the books, and Florida Gov. Ron DeSantis, former U.N. Ambassador Nikki Haley and businessman Vivek Ramaswamy seem to have made the best impressions.

We know that thanks to fresh data from a FiveThirtyEight/Washington Post/Ipsos poll, conducted using Ipsos’s KnowledgePanel in the hours immediately following the debate. We surveyed the same group of likely Republican primary voters before and after the debate, allowing us to see how much it may have shifted public opinion. All pre- and post-debate numbers below are limited...