It was to widen the gap between him and #2, Carson.
Trump did not need to increase his numbers, cause no one outside of Carson is within 15 points. I guarantee you the gap expands in the next week. Whether because Trump gains, or Carson loses, the momentum game is all that matters, and Carson was the firewall.
Yes.
Grades
Paul. B+
RUBIO. B+
Huckabee B+
Cruz. A+
Fiorina. B+
Bush B+
Trump. B+
Christie. A-
Kasich. B
Carson. A-
Walker. B+