Do you believe that my decision to vote is as like to acausally influence my opponents into voting as it is my supporters?

For example, if the reason you were considering not voting was bad weather on election day, and you managed to discard that reason as one you won't be moved by in a voting decision, this decision would be common to many people irrespective of their candidate. By deciding to vote anyway, you establish that people in similar situations do vote.

This additionally places into question one vote as a lower estimate of influence of your decision, making it an outright useless figure.