“A divisive Democratic primary for Senate in Michigan on Tuesday, arguably the party’s most consequential contest so far this year, will reveal whether a progressive and socialist groundswell has spread to America’s heartland,” the Wall Street Journal reports.“The race, in a state critical to the party’s prospects for winning a Senate majority, has featured months of infighting over what the party stands for.”“The battle between Abdul El-Sayed, a progressive former local public-health official, and Rep. Haley Stevens, a four-term congresswoman, encapsulates virtually everything dividing Democrats. There has been debate over who is to blame for 2024 election failures, the type of candidate best positioned to beat Republicans in November, the role of corporate and big-dollar campaign money, and the U.S. relationship with Israel.”CNN: The fight for Michigan: how a marquee Senate primary became the Democrats’ latest proxy war.