I visited a site (http://longboxgraveyard.com/2012/12/12/78-longbox-soapbox-fall-2012/) that had a polldaddy poll in it; I didn't enter the poll, read the page, made a comment then left. When I returned to my own site I saw that that same poll appeared at the bottom of my pages. Why is it there? And how do I get rid of it (I have tried looking at 'widgets' - nothing there)?
The blog I need help with is mlewisredford.wordpress.com.