La. Stat. tit. 18 § 451
A person who meets the qualifications for the office he seeks may become a candidate and be voted on in a primary or general election if he qualifies as a candidate in the election. Except as otherwise provided by law, a candidate shall possess the qualifications for the office he seeks at the time he qualifies for that office. In the event that the qualifications for an office include a residency or domicile requirement, a candidate shall meet the established length of residency or domicile as of the date of qualifying, notwithstanding any other provision of law to the contrary. No person, whether or not currently registered as a voter with the registrar of voters, shall become a candidate if he is under an order of imprisonment for conviction of a felony.
La. R.S. § 18:451