If they win big, it could spell doom for their challengers. Rival Senators Marco Rubio and Ted Cruz were trying frantically to halt Trump's march toward the nomination, - See more at:
http://taimenews.com/en/United.States.U.S.A-news?p=/news/worldnews/us-election/12178967/Analysis-Ted-Cruz-goes-on-full-throttle-attack-to-beat-dishonest-Donald-Trump.html&s=2&d=http://www.telegraph.co.uk/