motherjones:

We learned something new today. Er.

(via)

The passages cited:

Arkansas, Article 19, Section 1

No person who denies the being of a God shall hold any office in the civil departments of thisState, nor be competent to testify as a witness in any Court.

Maryland, Article 37

That no religious test ought ever to be required as a qualification for any office of profit or trust in this State, other than a declaration of belief in the existence of God.

Mississippi, Article 14, Section 265

No person who denies the existence of a Supreme Being shall hold any office in this state.

Pennsylvania, Article 1, Section 4

No person who acknowledges the being of a God and a future state of rewards and punishments shall, on account of his religious sentiments, be disqualified to hold any office or place of trust or profit under this Commonwealth.

South Carolina, Article 17, Section 4

No person who denies the existence of a Supreme Being shall hold any office under this Constitution.

Tennessee, Article 9, Section 2

No person who denies the being of God, or a future state of rewards and punishments, shall hold any office in the civil department of this state.

Texas, Article 1, Section 4

No religious test shall ever be required as a qualification to any office, or public trust, in this State; nor shall any one be excluded from holding office on account of his religious sentiments, provided he acknowledge the existence of a Supreme Being.