This looks like a good development – Twitter are introducing a polling option soon:
“Previously, we’ve offered a few ways to participate in polls — Tweeting questions and tracking replies, tallying hashtag votes, or asking followers to favorite or Retweet to vote. Now, you’ll be able to create your own two-choice poll right from the compose box and it will remain live for 24 hours. You can vote on any poll, and how you voted is not shared publicly”.
This will open up lots of possibilities especially for Twitter chats like #LTHEchat.