You can create an online poll or survey on web site easily but can’t make it on Google+ caused there are no any Google+ poll API let you to do that.I can share a hack let you do it if you aim to have a poll on Google+ and start collecting results in real-time.
The secret is using Google +1 button and comment system
1.First you need to prepare the survey question and answers options,then publishing the question and share to all.
2.Now click on comment icon adding your survey answer options and post it on comment one by one.
3.After post comment completed,then click right corner icon on stream,select ‘disable comments’.
4.Now wait all the Google+ users polling in Google+. Google+ users just need click +1 button in the options.
5.The poll or survey result will shown on each option.
6.If you want to invite your friends joining this poll,just use Google+ specific message link sharing with your friends who already have a Google+ account.