Section 1. Election and officers

The citizens of the state shall be entitled to vote at all elections held within the counties in which they respectively reside; but no person who is a minor, or who has been declared mentally incompetent by a court of competent jurisdiction, or who is under conviction of treason, felony or bribery in an election, or who has not been a resident of the state and of the county in which he offers to vote, for thirty days next preceding such offer, shall be permitted to vote while such disability continues; but no person in the military, naval or marine service of the United States shall be deemed a resident of this state by reason of being stationed therein.