Milwaukee’s mayor has decided he won’t run for Wisconsin governor after all.  Democrat Tom Barrett announced Tuesday he has decided not to join the crowded field in his party of 10 candidates running for the state’s highest elected position.  He has lost three races for the office in the past.  In a Facebook posting, Barrett says Wisconsin needs a new governor, but he loves his job and hopes to serve as Milwaukee’s mayor “for many years to come.”  Barrett had indicated interest in a campaign in April, saying he was being encouraged to run by others.