Many small-l libertarians, and disaffected Republicans, are finally starting to ask a question not posited for quite a while: Is the best strategy now simply to vote "gridlock for the sake of gridlock"?
If I could vote - "Hillary, but only if Republicans control Congress" I certainly would. Unfortunately, that is not the choice you get to make. Election time is probably my least favorite time of the year. You only get a choice between bad and worse - and you are never sure which is which until it is way too late. That old adage about politicians and moving lips is more than a little true.
Kip postulates that the best way to fight the two party system is to not be a part of it. I'm not so sure. At the end of the day Republicans and Democrats want to get elected. If you vote for them as a Registered Republicrat or a Registered Libertarian or plain old independent really doesn't matter. Once in office they are going to do what politics demand, not what the party faithful want, or even the electorate at large.
Until the choice at the ballot box becomes something other than Tweedle Dee vs Tweedle Dum the entire question is irrelevant.