There should be no surprise here. The democratic party has been veering leftward for a while now. The moderates of the party are being pushed out. The coolestfish acknowledged it several months ago. He'll be the only one. The rest here are the ones pushing.
Hillary was marching leftward all during her campaign, now she'll be marching rightward to differentiate herself. It will be an epic fail. This is nothing moderate in her party to appeal to.
Whether it is Trump or Cruz doesn't matter. The dems are going down.