Thomas Jefferson figured that out way back when he created the Democratic Republican party. Shortly he demonstrated that by focusing on getting his supporters out to vote he could easily swamp other politicians who focused on issues.
He destroyed the Federalists and several other parties.
Eventially the Whigs came along with their idea of building a coalition party around public works and investment. That worked sufficiently well they were able in a few elections to match the Democrats candidate for candidate in virtually every district, and state, and at the Presidential level.
The Whigs got hung up on the issue of slavery and wouldn't bend. They lost the support of enough people to go out of business. They were replaced by a new party called Republican ~ created with no more difficulty than that of sponsoring a committee to select a candidate to run for President. They lost their first election. They won their second. The Civil War started.
Back to the point ~ the hispanics hate American whites and despise American blacks. Whichever political party they take over they're going to be alone. That forever dooms them to a secondary role in the American political process.
That's an interesting assertion but I believe there may be something ignored in your analysis. Abortion.
Latinos generally are opposed to it, so given that, their population will grow at a faster pace than whites and blacks, generally speaking. Indeed, I do believe latest projections have Hispanics/Latinos as being the new "majority" in the US by 2020.
So really, taking this into account, whichever party Hispanics enter/take over will be ruled by them, and the blacks and whites are the ones that will take a "secondary role".
Can’t say I really see that. Live with them and work with them, and I would argue just the opposite, that some like white folks some do not. No different from white folks in that regard.