The Democratic establishment has gone mad — and 2016 will be last stand for party hacks

Early last October, after New Hampshire Gov. Maggie Hassan announced she would run against GOP Sen. Kelly Ayotte next year, Politico reported that despite this piece of good news in the Democrats' quest to retake the Senate, “their path to victory is being blocked by potentially ruinous primary challenges in other key states.” Pesky voters! Who let them in? More specifically:In four key states, each among the Democrats’ best bets to take over Republican seats, upstart challenge