After jumping out to an improbable lead in Michigan a week ago following a sweep in three western states, Santorum still holds a 37% to 34% lead over Romney, who until recently had been considered all but certain to win a state where he was born and grew up. It's also a state where his father, George Romney, was a nationally known auto executive and a popular three-term Republican governor.
Mitt Romney, who left Michigan decades ago as a young man to pursue a business career in Massachusetts (where he later became governor), has made inroads into what some polls showed as a sizeable Santorum advantage following wins two weeks ago in Colorado, Minnesota and Missouri. In metro Detroit, he leads Santorum, the former U.S. senator from Pennsylvania, 41%-26%.
The race remains a volatile one, perhaps right up to the end. Nearly half of the poll’s respondents – 45% — said they would consider changing their minds about who to vote for before Tuesday, and 12% of respondents said they were still undecided who to vote for on Tuesday.
But Santorum continues to show strength, as the conservative base rallies around him: Among self-described conservatives, he leads Romney 46% to 27% (Romney leads among the much-smaller bloc of moderate voters 51% to 17%.) Men favor Santorum 41% to 29% for Romney, and Santorum has built up double-digit leads over Romney in the western and central parts of the state.