By David M. Drucker This is how winning political coalitions unravel. An unforeseen development roils one of the major political parties. For the Democratic Party, that development was Donald Trump in 2016. For the Republican Party, that development is growing antisemitism on the right, especially among younger voters. The smoldering tensions flared into open view with Tucker Carlson’s friendly interview with the proudly racist, misogynist and Jew-hating influencer Nick Fuentes. The fallout has opened a rift between the populist right and traditional conservatives that threatens to splinter the remarkable coalition — younger and more racially diverse than previous GOP coalitions...