A Democrat won the Ohio governorship for the first time since 1986 as Rep. Ted Strickland easily defeated Republican Ken Blackwell in one of 36 races for states' top elected office. With 10 new governors guaranteed to come out of Tuesday's elections, state governments were in for their biggest shake-up in years _ one that had a chance of being even more tumultuous if Democrats managed to reverse years of Republican dominance. Strickland's win in Ohio was based on a statistical analysis of the vote from voter interviews conducted for The Associated Press by Edison Media Research and Mitofsky International....