Republicans for the Green Party?

A friend alerts me to the fact that the Pennsylvania Republicans are now working to get the Green Party on the ballot for the 2006 Senate election. Obviously, the ploy is to give a potential "alternative" to lefty Democrats who don't like Casey's stance on abortion, gun control, etc., and thus to try to give Santorum a boost. This isn't the first time they've tried this ploy: they did the same thing (for Nader) in Oregon and Michigan in 2004.

UPDATE: TPM reports that every single donor to the PA Green Party's drive to get on the ballot is a conservative Republican.