They don’t need the majority of the Hispanic vote, just get all of the conservative ones. They’re out there.
You’re right that they are out there but they probably have been in the USA for at least two generations as my family has and we vote conservatively. But most of the newer arrivals who I count as twenty years or less are very dependent on big brother government. Their numbers are growing very fast. John McCain and Jeb Bush etc. either are ignorant or playing us for fools when it comes to immigration.