The current method is not scalable due to the whacky plethora of ways people express their choices. (Although writing scripts to parse last year's nominations was more fun than doing the crossword that day).
Polls can be multiple choice.
The one hiccup is that currently, the forum only allows 20 poll items at a time. But that is easily remedied by the instructions here...
admin panel ->I have prolly skipped over this in the ACP, but is there some way to increase the number of poll options from 20 to X?
post settings ->
Maximum number of poll options