There haven't been too many changes in the polls recently, but I did catch something today that grabbed me: for the longest time, Mitt Romney, perhaps driven by the fact that he has ties to Michigan, given that his father was the governor of the state for years and thus some still recognize the family name, has had a decent lead in Michigan in polling for the Republican primary there.
But scroll down a bit when you click the link above and you'll see that on Friday, an Insider Advantage poll in Michigan shows, for the first time I believe, Rudy Giuliani with a slight (3%) lead there. Interesting.