I n a year when the Democratic base is inflamed over their party’s shutdown capitulation in the Senate, and sees its leaders’ resistance efforts as insufficient, there’s little appetite for bipartisanship in primaries for the make-or-break midterms . With that in mind — and with control of the U.S. Senate on the line — Michigan’s Democratic primary has become an all-out brawl over dark money and Israel, one that is central to the debate over the Democratic Party’s identity, but still risks opening old wounds at an inopportune time. That debate was dialed up to 11 this past week with the news that Rep. Haley Stevens, viewed as the favorite of Senate Minority Leader Chuck Schumer, had become the beneficiary of a $5 million surge in dark money ad spending from a group aiming to boost Stevens’ image as an opponent of the Trump administration and ICE. The group is “strongly suspected to be linked to the American-Israel Public Affairs Committee [AIPAC],” HuffPost reported.…