Can You Vote In Michigan After Serving Time In Prison?

I always thought that those convicted of a crime were not allowed to vote.  That their constitutional right to do so was revoked.  According to michiganradio.org that is the case in several states but not Michigan.

It is true that in many states the right to vote is permanently revoked for people who have served time especially for a felony.  In others, you can get the right back but only if the Governor or a judge restores it.  However in Michigan, such individuals have the right to vote.  Once you have served your time all you need to do is re-register and your rights will be restored automatically.  In fact, people who are in jail but not sentenced yet can vote absentee.

I had no idea.  I always thought is was a national restriction and individual states we unable to decide for themselves.  The question is, what do you think?