You have the ability to delete the thread you inadvertently created on the voting booth board, yourself.
How? Please tell me.
Open your thread, scroll down to the very bottom of the page, and look in the lower left corner for a button that says "remove topic". Then click on it.
I can't find the button
I can't help you, then. I noticed the thread is locked, did you do that? I'm assuming not, in which case the mods have already taken action (though why they locked it rather than just deleting it is a mystery).