Sen. J.D. Vance’s (R-OH) rapid-pace transformation from a vocal critic of former President Donald Trump into a disciple desperately seeking running-mate status mirrors the Republican Party’s descent in the year’s biggest political joke, a new Washington Post editorial argues. Columnist Matt Bai on Friday delivered awalloping take-down of the junior Republican senator from Ohio who appeared in a bright red tie this week at Trump’s criminal hush money trial. “Vance isn’t just another wiseguy wannabe,” writes Bai. “He’s the walking embodiment of a Republican Party that has devolved into full-on f…