Iowa caucus not about candidate with 'best chance of winning,' per Quinnipiac poll, Dec. 2015. Only 15% of Ted Cruz supporters said 'best chance of winning' was most important characteristic

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Dec. 14, 2015, Quinnipiac Iowa Poll. Dec. 4-13, 2015

"Most  important characteristic, Q51": 

"Shares values:" 40% of Cruz supporters say "shares values" is most important

"Best chance of winning:" Only 15% of Cruz supporters say "Best chance of winning" is most important

Dec. 2015 Quinnipiac Iowa Poll