http://www.legislature.state.al.us/misc/history/constitutions/1819/1819_2and3.html#Article%20III

Constitution of 1819

ARTICLE II.
DISTRIBUTION OF POWERS

SEC. 4. No person shall be a representative unless he be a white man, a citizen of the United States, and shall have been an inhabitant of this State two years next preceding his election, and the last year thereof a resident of the county, city, or town, for which he shall be chosen, and shall have attained the age of twenty-one years.

SEC. 5. Every white male person of the age of twenty-one years, or upwards, who shall be a citizen of the United States, and shall have resided in this State one year next preceding an election, and the last three months within the county, city, or town, in which he offers to vote, shall be deemed a qualified elector: Provided, that no soldier, seaman, or marine, in the regular army or navy of the United States, shall be entitled to vote at any election in this State; and provided, also, that no elector shall be entitled to vote except in the county, city, or town, (entitled to separate representation,) in which he may reside at the time of the election.

http://www.legislature.state.al.us/misc/history/constitutions/1865/1865_8_9.html

Constitution of 1865

ARTICLE VIII

ELECTIONS BY THE PEOPLE

Section 1. Every white male person, of the age of twenty-one years and upwards, who shall be a citizen of the United States, and shall have resided in this State one year next preceding the election, and the last three months thereof in the county in which he offers to vote, shall be deemed a qualified elector. Provided, that no soldier, seaman, or marine, in the regular army or navy of the United States, and no person who shall have been convicted of bribery, forgery, perjury, or other high crime or misdemeanor which may be by law declared to disqualify him, shall be entitled to vote at any election in this State.

http://www.legislature.state.al.us/misc/history/constitutions/1868/1868.html

Constitution of 1868

ARTICLE VII.

ELECTIONS.

Section 1. In all elections by the people, the electors shall vote by ballot.

Section 2. Every male person, born in the United States, and every male person who has been naturalized, or who has legally declared his intention to become a citizen of the United States, twenty-one years old or upward, who shall have resided in this State six months next preceding the election, and three months in the county in which he offers to vote, except as hereinafter provided, shall be deemed an elector: Provided, That no soldier, or sailor, or marine in the military or naval service of the United States, shall hereafter acquire a residence by reason of being stationed on duty in this State.

http://www.legislature.state.al.us/misc/history/constitutions/1875/1875_7and8.html#suffrage

Constitution of 1875

ARTICLE VIII.
SUFFRAGE AND ELECTIONS.
Section 1. Every male citizen of the United States, and every male person of foreign birth, who may have legally declared his intention to become a citizen of the United States before he offers to vote, who is twenty-one years old or upwards, possessing the following qualifications, shall be an elector, and shall be entitled to vote at any election by the people, except as hereinafter provided:
First.--He shall have resided in the state at least one year immediately preceding the election at which he offers to vote.
Second.--He shall have resided in the county for three months, and in the precinct or ward for thirty days immediately preceding the election at which he offers to vote; provided, that the general assembly may prescribe a longer or shorter residence in any precinct in any county or in any ward in any incorporated city or town having a population of more than five thousand inhabitants, but in no case to exceed three months; and provided, that no soldier, sailor, or marine in the military or naval service of the United States, shall acquire a residence by being stationed in this state.

http://www.legislature.state.al.us/CodeOfAlabama/Constitution/1901/CA-245717.htm

Constitution of 1901

SECTION 177

Age and citizenship qualifications of electors.
Every male citizen of this state who is a citizen of the United States, and every male resident of foreign birth, who, before the ratification of this Constitution, shall have legally declared his intention to become a citizen of the United States, twenty-one years old or upwards, not laboring under any of the disabilities named in this article, and possessing the qualifications required by it, shall be an elector, and shall be entitled to vote at any election by the people; provided, that all foreigners who have legally declared their intention to become citizens of the United States, shall, if they fail to become citizens thereof at the time they are entitled to become such, cease to have the right to vote until they become such citizens.