that the front runner for my party's nomination seems constitutionally incapable of winning primaries in Democratic states.
Swing states matter, for the rest your embarrassment is the least of our worries. We have a presidency to win.
Actually, we have settled the nomination yet.
what you meant by "constitutionally incapable"?
It's an ordinary turn of expression that essentially means, "by his nature."
He has won plenty of Democratic states: MN, VT, CT, WI, ME, etc. Not to mention a boatload of swing states.