False! There are small, but non-negligible benefits to voting 3rd party (assuming that such a 3rd party indeed more-closely reflects your political convictions):
1) Matching campaign funds and
2) notoriety.
Regards,
There are also huge — albeit fairly improbable — disastrous consequences to voting 3rd party. For example, if Romney loses VA by fewer votes than Virgil garners, and the Marxist wins another four years as a result, that would also be “non-negligible,” to say the least!
Had the Libertarians in AZ8 voted for Jesse Kelly then Gabby Giffords would still have all of her brain because she wouldn’t have been at that shopping center.