By Matt Margolis Sen. John Fetterman (D-Pa.) torched Sen. Bernie Sanders (I-Vt.) in an impromptu interview with CNN’s Manu Raju, and boy, Sanders didn't take it well. The blowup is over Michigan's Senate primary , where Democrat voters look poised to hand their nomination to Abdul El-Sayed, a Democratic Socialist who has spent months running to the left of nearly everyone else in the race. His chief rival, Rep. Haley Stevens (D-Mich.), is clearly the more electable option, but El-Sayed looks like he’s going to win. A recent poll shows Republican Mike Rogers (R-Mich.) beating El-Sayed by 10 points in a general election matchup. Swap in Stevens against Rogers, and the race is a dead heat, within the margin of error. Sanders , of course, has thrown his weight behind El-Sayed, and Fetterman thinks that is a mistake. In fact, he said so bluntly to Raju in a rather scathing attack on Sanders. He brought up Sanders' lack of regret for propping up Graham Platner , even after...