"Republicans will have a permanent disadvantage in presidential elections. That’s not unusual in American elections; Democrats right now appear to have a systematic disadvantage in both House and Senate elections due to how voters happen to be spread out – so, in a sense, a real Democratic advantage for the presidency only evens things out a bit.
It would, however, be a real change in how presidential elections have been fought for at least the last several decades. Republicans would be, in effect, starting every cycle two points behind. If it’s true – and I’m sure before long we’ll have reports from political scientists who have investigated each of the possibilities I suggested – then it’s a pretty big deal."
