I would say this demonstrates that the Reagan coalition has shrunk.
A lot of us have died off. Young skulls o’ mush come out of college as Bernie Liberals. And a wide swath in the middle has given up on Reaganomics because the Republicans in power since Reagan have perverted it, and too many voters now think it’s a crony scam.
Cruz can only win when evangelicals run the process from end to end. There is no more silent Moral Majority. Hell, Falwell’s son endorsed Trump.
Something like 30% of people voting in 2016 were not even alive during the Reagan years much less voting! If Cruz is building a “Reagan” coalition, he is doing it with Democrat tricks—getting the “dead” to vote on Election Day!