"So how much is a vote worth?" A lot more than a president.

The amount of money spent on campaigning, I believe, was far far more than the amount spent on the voting process. That's arsy-versy.

Uneven access to the voting process is unconstitional, I would have thought, whether it's because of intentionally discriminatory literacy tests, or unintentionally, because of economic factors that mean some places can't afford to provide the needed facilities.

The Supreme Court to some extent picks and chooses which cases it takes on, with a view to determining the laws it has decided need clarifying. I'd be surprised if a case doesn't arise which would allow it to deal with these kind of issues, even if the people raising it did get slagged off in coded language as "demagogues".