Is there a truth, a way of cutting through this ignorance? Is there a way even, a wise electorate could break through such a system, especially in lieu of the simple power of money, and in light of such things as the DNC rigging against Bernie or the RNC being incapable of providing an alternative to Trump? If the truth is unknown, how can the truth be found? I don't mean this rhetorically, just interested
Well the latter would be solved by reforming the primary process to include alternative vote. e.g. if you have three mainstream candidates and a radical candidate, it shouldn't be possible to split the vote, because people can't decide on exactly which mainstream candidate to back, so the radical wins even though most of the party would have preferred basically anyone but him.
Also, If that had been the case then Trump might not have gotten up, and the fact that Sanders polled higher against the Republican candidates than Hillary did would have counted for much more, as the race would have been closer. Democrats largely push a less-overall-popular mainstream candidate because they thought they had it in the bag. If Cruz or Rubio was running, Clinton may not have looked like such a safe bet. It would be Democrats then with more to gain by running Sanders to pick up the un-served populist vote.
Also, things would clearly be different with either per-congressional seat voting or national popular vote. Swing states etc wouldn't be a thing then, and anyone who
did win would be able to say they had a mandate already. Due to the quirks of the Electoral College some frankly insane outcomes are possible, where e.g. only about 5% of eligible voters voted for you, but you still won. Ironing out the quirks would change the landscape considerably.
(Note the 5% trick is to run as a third candidate, and target all your efforts at bribing half of the 17% of voters who live in the 26 smallest states. Neither big party picks up 50% of the vote then, and then the tie-breaker vote is per-state, with one vote per state, and since you won 26 states, you win with about 8.5% of the voters, which would be about 5% of the eligible voters).