Political dos and don'ts for churches

We all have our political convictions. But how much can you say from the pulpit, in a meeting at church, or in congregational literature?

• United States
  To help pastors and churches understand what political activity is and is not legal and appropriate, the James Madison Center for Free Speech has prepared some helpful guidelines (PDF).
• Canada
  The Evangelical Fellowship of Canada offers a number of practical resources regarding citizenship and political involvement, including "dos and don'ts for churches."