What are Cruz, Trump supporters thinking?

Following the Paris and San Bernardino brutal terrorist attacks, reported to be inspired, if not executed, by the Islamic state (ISIS), polls showed that the ISIS threat was uppermost in people’s minds — and understandably so.

Yet when shortly following those terrorist attacks the news was that ISIS is using videos of Donald Trump’s remarks to recruit new followers, Trump’s poll numbers didn’t fall at all. And other Republican presidential candidates such as Ted Cruz, also high in the polls, are contributing similar fodder for ISIS recruitment.

ISIS is completely dependent on new recruits to e...