It is an article of faith among Reactionaries that they constitute a majority of “real Americans,” and that the key to winning the presidential race is to mobilize millions of evangelical voters who are turned off by moderate GOP candidates and do not vote. In electoral terms, this is the basis for the Cruz campaign. Unfortunately for him, there is no support in the data for this position, as he will discover if he gets the nomination.
Similarly, the “Sanders Revolution” is based on the premise that he can inspire millions of disaffected potential Democratic voters to register and vote for him. These people actually do exist, but there is no reason to believe that they are sufficiently motivated by a cranky old white guy to get out and vote, even though it might be in their economic self-interest.