Ted Cruz won Wisconsin Tuesday because "the cracks in the Trump campaign are beginning to show," political consultant and Trump ally Roger Stone told"In all honesty, his candidacy has been based on a communications-based strategy so far," Stone told host Ed Berliner on "America Votes: 2016" in an interview. "It worked enormously well until now."Watchonand. Geton your cable system —He widely slammed the Trump campaign, from its lack of polling data, inexperienced ground staff — as well as the developer's recent debacles, including his flip-flops on abortion and his campaign manager being charged in the alleged assault on a news reporter."Trump had no polling — so, of course, you didn't really know what was going to happen" in Wisconsin, Stone told Berliner. "He worked very hard for that, but in all truth, Ted Cruz out-organized him."He also noted the role Wisconsin Gov. Scott Walker played in Cruz's victory."The Walker machine is extremely adept at voter turnout, as they proved in two recall elections and two elections for governor — as well as in beating back an attempt to recall the Republican majority in the state Senate," Stone said.The road to the Republican National Convention in Cleveland in July could easily cost $20 million — and Stone doubted whether Trump would put out such funds."That's a lot of money and so far he's been very, very frugal," he told Berliner. "Remember, this is a campaign with no polling, virtually no TV commercials, no radio commercials."It's a tough road ahead for him to get to the nomination, no question."I would be surprised if he's prepared to spend that kind of money," Stone said. "He really is committed to a communications-based strategy."