What has been found as a right, under Equal Protection, is that whatever voting is to be done, must be available to all, equally. No vote is even required among the states... they just all choose to do so, because anything else is political suicide in the US.
Right, where "equally" means whatever the rules are they are the same for everybody without regard to race, creed, religion or sex. If the rule is "vote or welfare, pick one," then that rule has to be applied equally.
The vote is popular with the elite political class, in part because they can point to "the right to vote" as giving their unconstitutional shenanigans legitimacy. The vote also has the effect of creating the illusion of the people being in charge of their own destiny.
-- ... anything else is political suicide in the US --
And if the people indirectly choose (government) financial suicide, or regression of personal independence and responsibility (a choice the masses will make every time), the result will eventually be a change in form of government.
The people will keep their vote, but not their freedom.