“So far Hillary has won every battleground state that the Dems must sweep to win next November, NJ, OH, PA, TX, CA, plus FL and MI, if you count those.”
Irrelevant. They are competing against themselves. Doesn’t mean squat since they are running against a Republican in November.
It’s not irrelevant. If the Dems nominste Obama a fair number of older, moderate Hillary voters will vote for McCain. Not most, but enough to tip the outcome.
I'm not so sure that it's irrelevant. There is a lot of vitriol amongst the two camps. I think yesterday's race was particularly remarkable: at this point, Clinton has basically no chance of winning the nomination. Yet she won PA by double digits, even though primary voters tend to vote for the established leader. I think Clinton's win was really interesting, and it shows how much Clinton supporters really don't care for Obama.
The real question is how many Clinton supporters dislike Obama enough to pull the lever for McCain in November. Could be an important factor.