It's election day in the United States. If you understand and care about the issues and candidates on your local ballot, remember to vote. If, on the other hand, you don't particularly understand or care about matters being polled, then please don't vote! Your vote is important, but not so important that it must be cast, even randomly/arbitrarily/superficially, if your actual interests lie elsewhere. Choosing not to vote on particular questions, or not to vote at all, is a perfectly legitimate decision, and don't let any "more civic than thou" ninnies tell you otherwise.
Do you disagree? In a democracy, should we feel an obligation to vote, even when we know or care little about the issues on the ballot, or when we believe our vote to be irrelevant?