AFAIK we have group support which we consider a far better and flexible solution to this kind of problem. Given each TL is a group you can create a poll like this one:
Can you vote this ?
Yes Im TL3
Yes Im TL4
0voters
[poll type=regular results=always public=true chartType=bar groups=trust_level_3,trust_level_4]
# Can you vote this ?
* Yes Im TL3
* Yes Im TL4
[/poll]