(CNN) - Mitt Romney's victory over John McCain can be credited to three factors, CNN exit polling indicates.
A majority of Michigan voters named the economy as the most pressing issue - and those voters overwhelming chose the former Massachusetts governor and one-time successful businessman: 41 percent of them went for Romney, compared to 29 percent who went for McCain.
Romney was also aided by winning a strong share of evangelical voters. As predicted, evangelical turnout was up this cycle - they constituted 38 percent of GOP primary voters. Mike Huckabee was banking on winning this bloc as overwhelmingly as he had in Iowa, but the exit polls indicate that he and Romney were essentially tied among those voters, with Romney getting the votes of 33 percent to Huckabee’s 31 percent.
Finally, Romney's local ties to Michigan - he was born there, and his father served as the state’s governor - may have put him over the top: 41 percent of Republican primary voters said Romney's connection to Michigan was an important factor in their decision on who to support.
- CNN Ticker Producer Alexander Mooney