In primary races for Congress, the state legislature and attorney general, data center opponents prevailed.By Tom PerkinsPlans for a 26-megawatt data center that surfaced in Allen Park, Michigan, last year quickly ignited a groundswell of opposition from residents in the small, working-class Detroit suburb. As in dozens of other communities across Michigan where similar facilities were proposed, they feared pollution, increased energy rates, overuse of water and a host of other problems.