Contest to pick president ial nominees. Each party has two frontrunners essentially tied. This is only the beginning, of course, of a process that lasts enter june, but these caucuses have never been more important. With three major candidates trying to turn the process outsidein trump, cruz and sanders, outsiders, testing establishment candidates, including clinton. We have a team of correspondents. First well go to Major Garrett with the republicans tonight. Major . Reporter scott, to win donald trump needs massive new turnout, thousands of voters participating statewide. Four years ago turnout was about 122,000. Ted cruz is betting everything here, his Massive Organization can withstand voter turnout up to 170,000, but beyond that, it is trumps game and trumps night. Good morning. Its the day weve been waiting for. Reporter before dawn, ken brolin woke up 130 ted cruz central central tears living in this apartment complexes known as camp cruz. We give this our all for one moredy and