By Gram Slattery WASHINGTON (Reuters) -Four Republican presidential candidates are scheduled to face off in the fourth debate of their party’s 2024 nominating contest this Wednesday. Here are some facts about the debate: WHERE IS IT? It will take place at the University of Alabama in Tuscaloosa at 7 p.m. local time (0100 GMT). It will be hosted by subscription-based television network NewsNation, conservative political journal the Washington Free Beacon, The Megyn Kelly Show on Sirius XM and Rumble, a video hosting service popular with conservatives. The forum, which will be broadcast on telev…