Nonsense. People didn’t vote third party in 92’ or 96’. Oh, nevermind.
To be a third (spoiler) party candidate is a selfish thing which, unless you are so wildly popular that you can grab a third or more of the electoral votes, is counterproductive to what you want. If Romney got the GOP nod, then Sarah Palin said she was going to run with Cain as a third party... now that could grab enough votes to upset the applecart but good.
Research how many electoral votes Governor George Wallace & General Curtis LeMay garnered in 1968 against former Vice President Richard Nixon and Vice President Hubert Humphrey.