Yes! Surveys and polls are best done using mobile keywords. Here is a great example:
Let's say you want to poll your employees about your next team outing. You could say something like this:
We're letting you vote on where our next team outing should be?
Text EVENT1 to XXX-XXX-XXXX if you want to do a rope's course.
OR
Text EVENT2 to XXX-XXX-XXXX if you want to go white water rafting.
In your account you can go to AUTORESPONDERS > MOBILE KEYWORDS where you'll find a ROLL UP REPORT at the top of the page. This report will provide you the total and unique number of people who have texted each keyword. The one with the most uniques is the winner.