Major shake-up in Maine Senate Democratic primary Chief congressional correspondent Chad Pergram reports after Gov. Janet Mills drops out of the Maine Senate Democratic primary, leaving controversial candidate Graham Platner as the presumptive nominee. NEW You can now listen to Fox News articles! Sen. Chris Van Hollen, D-Md., pushed back against criticism of U.S. Senate candidate Graham Platner over his " Nazi tattoo " and past online comments, arguing that Platner’s behavior may be linked to