It most states it’s left versus right. In this race it’s a left of center candidate (Brown) against a far left marxist (Warren). It’s a sad day when being center-left is about as far right as you can be and still get elected. The fact that Warren isn’t behind by 20 points show just how far down the path to socialism we are (or at least certain blue states are).
If you take Boston and Cambridge out of the equation it wouldn’t be close.