Votekick is useless, as the player can join back in with two clicks.
But the point is, MTA is based on a system of different elements, and not playerids. However, you can script playerids in via tables and such, so feel free to try.
Back to my first point, votekick is kinda useless. I'd say make it a 5 minute ban kinda kick, cause most of the time they rejoin straight away and try to kick you. Damn idiots.