Republican Mike Huckabee entered the race for his party's presidential nomination in 2016 on Tuesday, looking to break out from an ever-widening field by drawing on the support of social conservatives attuned to his culture-warrior message.Huckabee, 59, a former governor of Arkansas and former host of a popular Fox News Channel program, made his announcement in Hope, the small town that both he and Democrat Bill Clinton claim as their home town.