The following "rules" for mixing religion and politics are from the Web site of the People for the American Way.

Government and Religion:

Rule One: Religious Doctrine Alone is Not an Acceptable Basis for Government Policy.

Rule Two: There Can Be No Religious Test for Public Office, Nor Religious Test for Participation in the Political Process.

Church and State:

Rule Three: Public Officials Have Every Right to Express their Private Piety, and No Right at All to Use their Office to Proselytize Others.

Rule Four: Government Has a Right to Demand that Religious Institutions Comply with Reasonable Regulation and Social Policy.

Rule Five: Religious Institutions May Sometimes Cooperate with Government in Programs Supporting the Common Good.

Rule Six: Government Institutions Must Show Neither Official Approval or Disapproval of Religion

Religion and Religious Views in the Public Square:

Rule Seven: Political Discourse Should Respect Religious Differences.

Rule Eight: Political Figures Should Not Claim to Represent a Monolithic Religious Constituency, and the Media and Others Should Not Attribute Such a Constituency to Them.

Rule Nine: It is Legitimate to Discuss the Moral Dimension of Public Issues.

Rule Ten: Political Discussion of Morality is Best Applied to the Common Good, Not to Private Conduct.

Rule Eleven: No One Should Claim or Suggest that They Speak for God on Matters of Public Policy.

Rule Twelve: Religion Should Not Be Used as a Political Club.