Assuming the NSA wasn't actively threatening/blackmailing politicians into compliance with their long-term goals? Probably most of the third-party candidates, especially those with a libertarian bent. This shit didn't "just happen", there have been deeply entrenched vested interests on both sides of the aisle angling for this for a long time. Hell, I usually ignore elections as ineffective, but if real progress hasn't been made (not just promises) on reigning in the NSA by election day this year I'm standing in line to vote all third-party, and recruiting all my friends to do the same. It may already be too late at this point, but if we don't at least try we've got nobody but ourselves to blame. And a congress packed full of deadlocked ideological nutters that at least kind of want to serve their constituency can only be an improvement over the current situation.
Hell, maybe we could make an event out of it - live music, BBQ, the works. Draw a big crowd to the minimum legal distance from the polling place, and encourage them to vote for anyone without a D or R beside their name. A zero-day "Vote out the Sock Puppets" campaign. Give the apathetic a reason to show up that has nothing to do with politics, and let peer pressure and their own distaste for entrenched politicians do the rest. After all you can listen to music, eat your burger, and generally shoot the shit just as easily while standing in line.
This is my greatest concern. Still after all the time this spying has been public, no one seems to think it's a threat to the entire system of government of this Republic. Blackmail. Blackmail. The President of the U.S. and his ruling party which the NSA reports to has the emails and contact lists and meta data of every member of the opposition party. Also the same data on every judge including the Supremes and every reporter in the world. Doesn't anyone except me see that the system can no longer function under these conditions. Add to that secret courts, secret letters requiring further secrecy and as far as I'm concerned, this Republic has evolved into some kind of a fascist state. Nice experiment too bad it only lasted 225 years.