Of course, the likeliest Republican standard-bearer for 2024 remains former President Donald Trump, who skipped this debate like all the others. But his views obviously hovered over the stage. What’s more, by giving even second-tier candidates a chance to air their conflicts, these exchanges tell us a lot about the range of divisions in the party, as well as their commonality. Wednesday’s debate did show broad areas of agreement. Despite grumbling in the more extreme flank of the party, support for Israel against Hamas remains the hegemonic position in the GOP; only Vivek Ramaswamy opposed further U.S. aid even as...