today on inside politics, the final four. the stage is set. four republican presidential candidates have made the cut for the fourth gop debate. get ready for some fireworks between ron desantis and nikki haley, but will either take on donald trump? plus a desperate plea for ukraine. senators will hear directly from president zelenskyy about the stakes on the battlefield if they do not approve more fund ing. with just days left to act and the world watching, will u.s. lawmakers give up on cukraine? and hate on campus. the leaders of three of the country s most elite universities are on capitol hill right now answering questions about the terrifying rise of anti-semitism. did they allow hate to flourish. and what can be done to stop it now? i m dana bash. let s go behind the headlines and inside politics. we start with the 2024 race. ron desantis, nikki haley, vivek ramaswamy will be on the stage in alabama with less than six weeks until the first votes are cast, the fro