This is the primary reason I am so frustrated with friends of mine who are content to see Hillary and Trump as 'the same'. One of these two people will tilt the court away from the majority that decided on Citizens United. The other will tilt it further in favor of the side that decided on Citizens United.
Even if HRC was ideologically opposed to my own views I would vote for her since 4 or 8 years of HRC trumps (pardon the pun) the 40 years of SCOTUS seating the next president will set.
> If Thiel donates ... to Trump's campaign, then he effectively is saying what Trump is saying.
It amplifies the speaker's message at a point in time when it may still affect others who hear it.
By the time you vote, in secret, your choice affects no other voters.
https://en.wikipedia.org/wiki/Buckley_v._Valeo
"The majority, in a per curiam opinion, contended that expenditure limits contravened the First Amendment provision on freedom of speech because spending money, in its view, was the same as written or verbal expression."