Good luck with that, chaps. Wikipedia tells me that the last time a significant incident of faithless electors took place was in 1836, when the Democratic vice-presidential candidate lost out on 23 electoral votes from Virginia because they were butthurt that he'd been in an interracial sexual relationship with a black woman. They didn't vote for his opponent, though, they simply didn't vote. In that instance it went off to the Senate, who voted to install him as VP in any event.
Electors are usually chosen from the ranks of party members with a reputation for extreme loyalty to the party. At the most, they'd probably convince one or two electors to abstain from the Electoral College, in which case it will go to Congress to vote on the outcome and since Republicans now control both House and Senate it would end up being the Donald in charge anyhow.
