WASHINGTON, Nov 7: President Barack Obama won re-election to a second term in the White House on Tuesday, television networks projected, beating Republican challenger Mitt Romney after a long and bitter campaign. Obama defeated Romney in a series of key swing states despite a weak economic recovery and persistent high unemployment as U.S. voters decided between two starkly different visions for the country. Obama's victory in the hotly contested swing state of Ohio - as projected by TV networks - put him over the top...
