If Cruz emphasizes that Huckabee released criminals into society, raised taxes, and instituted nanny state programs, Cruz can beat him easily. Unlike some of the other GOP-e, the Chamber of Commies doesn’t like Huckabee.
Cruz won’t have to say a single word about the Huckster - nor should he. Cruz is above it, and he should stay above it.
Cruz gets liberty voters, economics voters, national security voters, Constitutional voters - as well as the Evangelicals. Huckster only has support in the ignorant low information evangelical sector, period, and he can never get past that. In a huge field, he may make some noise, but only noise.