Advanced Poll & Page Variables

It's not an easy question:

If you have your poll embeded in a php page, that generates different content depending on variables it's called with

Example: index.php?mode=news

you get a redirect after voting 2 da same page, but with no variables. So it would be:

Example: index.php (with no mode selected)

Does anyone know a way to save the variables and use them later in redirection.

Thanks beforehand