Voting is always effective.
In the worst case it communicates the magnitude of dismsissiveness while demonstrating your intention to claim agency.
Ah yes, voting is always effective. Thank goodness people in Germany kept voting in the early 1930s. Imagine what terrible things might have happened if they hadn't.
In the worst case it generates symbolism; that is ultimately what you’re saying.
That symbolism is akin to prayer.
I am not casting prayer in a negative light, I’m simply categorising your voting concept.