Remember that it's not really YOU that is "logged in" to FR. It's not even your computer that is logged in.
It is your browser.
Some polls might be available to logged-in members only.
Log in on both browsers.
I'm pretty sure both browsers have me logged in. I am replying to you right now from my IE session as NYS_Eric. A couple of posts back, you'll see I also replied as NYS_Eric. That was from my Firefox session.
For whatever reason, the polls show up at the BOTTOM of the sidebar in IE and at the TOP in Firefox. I tried to "Configure Sidebar", but there is no choice for polls when you click on that.