There are nearly three million federal employees, of whom 50.8 percent are professional, technical or administrative personnel. These federal employees and those individuals employed by a state or local agency whose principal employment is in connection with an activity which is financed in whole or in part by loans or grants made by the United States or a federal agency are subject to the United States Civil Service Commission rules regulating political activity. Under Civil Service rules, individuals may be removed from their employment for doing what every other American may consider a constitutionally protected right; namely, participating actively in partisan politics.
Donald H. Buckley,
Political Rights of Government Employees,
19 Clev. St. L. Rev.
available at https://engagedscholarship.csuohio.edu/clevstlrev/vol19/iss3/18