I wouldnt be a braggart about not voting. Its nothing to be proud of..............
Now, that SHOULD only apply to certain Offices folks are campaigning for, and not ALL offices on the Ballot. Meaning, one can refuse to cast a vote for either of the Candidates running for President, and still cast votes for all of the other Candidates running for Offices of a different position. Senators, Congressmen, State Officials, etc........
As for being proud..........I often do not cast a vote for President simply because I am very tired of voting for the lesser of two evils........and not voting for evil IS something to be proud of in my opinion. Voting for the lesser of two evils is still voting for evil...........don't matter how much lipstick one wants to paint that pig with, IT'S STILL EVIL one is voting for.