Source: Hannah Hartig, John Lapinski and Stephanie Psyllos, NBC News, April 5, 2016 Donald Trump remains the national frontrunner ahead of the Wisconsin primary, but his support among Republicans and Republican-leaners has dropped three points to 45 percent, down from 48 percent last week. Ted Cruz is behind him with 28 percent support and John… Continue reading Donald Trump's National Lead Dips After Controversial Week