Rubio emerges as early hope for mainstream Republicans

By Emily Flitter RINDGE, New Hampshire (Reuters) - U.S. Senator Marco Rubio, emerging from the first Republican nominating contest of the 2016 presidential election as the party's leading mainstream candidate, faces a strong field of rival establishment figures in next week's New Hampshire primary. Rubio, 44, from Florida, came in third at Monday's Iowa caucuses with 23 percent of the vote, making a stronger-than-expected finish and establishing himself as the alternative to front-runners Ted Cr