WASHINGTON (AP) -- President Barack Obama rolled to re-election Tuesday night, vanquishing former Massachusetts Gov. Mitt Romney and prevailing despite a weak economy that plagued his first term and put a crimp in the middle class dreams of millions. "This happened because of you. Thank you" Obama tweeted to supporters as he celebrated four more years in the White House. After the costliest - and arguably the nastiest - campaign in history, divided government seemed alive and well. Democrats retained control of the Senate with surprising ease. Republicans were on course for the same...

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