Sure shows in his polling. Did you see the Quinnipiac poll today? Trump at 34 in CT -—20 up on Carson. And, it has him losing to Cankles 47-40 .. . except Zero beat Romney 54-40 and McCain 60-38 there. So Trump, even before the nomination, is ALREADY performing at the level of, or above, Romney.
Carter here was 34% better than Reagan, and other polls showed in 30 percentiles range over Reagan in January or February of 1980. It was almost an astronomical number over Reagan.
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Harris polling - "President Carter so dominates the American political scene now that his margin over Ronald Reagan in a post-Iowa trial heat has risen to an overwhelming 65-31 percent. And against George Bush, the GOP candidate who finished first in the recent Iowa caucuses, Carter leads by only a slightly lower 62-32 percent. "
Trump can move the positive vote needle with the best of them.