Also, Reagan in 1984 wasn't even able to get 40% of the Latino vote and he was one of the most charismatic presidents of all-time. Walter Mondale still got 61% of the Latino vote
Latinos may not vote 80-90% for Democrats like Black people do but no GOP candidate is getting the majority of the Latino vote for the foreseeable future. Most Latinos live in urban areas and living in urban area makes you more likely to vote for Democrats (except in f*cking Miami

).
The interesting thing to watch is Latinos that live in rural areas. Rural Latinos (like in South Texas) might start to go towards Republicans more consistently and this would be an extension of the growing rural-urban divide in America. That might be a problem for Democrats at the House/Senate level...not the presidential.