Retrial for Casey Anthony?

Now I know a lot of people would just like to let this go. I honestly couldn't agree more about her not being worth even thinking about. But a little angel died. If enough of the mes demanded it, couldn't we get a retrial for Casey Anthony? They found chloroform as well as a decaying hair from Caylee Anthony in the trunk of Casey's car... There is NO way Casey is innocent. Those jurors were obviously tainted and were unfit to make the decisions they did. Any whom, back to the main question. Let's say if we could get a petition with one million signatures, would this be enough to get a re trial?