Scott Walker(56.1%) - 321
Lincoln Chafee(42.5%) - 217
Marco Rubio(58.0%) - 326
Lincoln Chafee(41.0%) - 212
John Kasich(60.3%) - 332
Lincoln Chafee(37.6%) - 206
If the Republicans were winning by the popular vote margins you assert, they would also win by MUCH greater electoral margins than those shown on your maps.
Sigh, bronz.
Anyway, probably something like that:
Republicans win 279-259.
I think Iowa (and probably New Hampshire and Virginia) would go Republican before Pennsylvania, and that Colorado would do so before Nevada.