How many congressmen and how many senators are there in the federal government
also, same questions for pennsylvania government
These sites will help you with that question.
http://www.google.com/search?hl=en&source=hp&ie=ISO-8859-1&q=Number+of+senators%2F+representatives+in+Congress&btnG=Google+Search
http://www.google.com/search?hl=en&ie=ISO-8859-1&q=Number+of+senators%2F+representatives+in+Pennsylvania+govt.+&btnG=Search