A Terroristic Divorce

Why is this site being blocked from access by computers connected to the internet through the Pennsylvania Network?

Stranger still is the consideration that while the Republicans cannot get to the content on my web site, the Democrats can access it.

Is this a Constitutional First Amendment issue? or just another method to hinder my communication on the overwhelming volume of issues.

For the record, I have always voted based on the character of the person, not their political party.