The spike in third party voting was for Perot and created a higher overall turnout [approx 105M]. The Not Voting graph spiked down that year implying that Perot brought new voters into the process rather than taking from Clinton and Bush. Trump brings much of the traditional R vote plus many non-voters = monster vote???
Is interesting isn’t it. Looks like somewhere in the neighborhood of 10 million votes that came out of the woodwork for Perot. If Trump pulls in a similar number from the sideline, it’s game over.