I don’t understand the reasoning, but this is AP bulletin:

PLAQUEMINE—A state judge has ordered that the sign-up period be re-opened for the Nov. 2 election in Louisiana’s 5th Congressional District, where incumbent Rep. Rodney Alexander first signed up as a
Democrat, then switched to the Republican party just before the qualifying deadline.

Judge Allen Edwards did not set a date for the new sign-up period, saying it will happen only after appeals _ which are likely _ have been exhausted.

A lawyer for the Louisiana Democratic Party filed the lawsuit aimed at either forcing Alexander to run as a Democrat or getting him kicked off the ballot altogether. The lawsuit cites a Louisiana law stating: “no candidate shall change or add his political party designation ... after he has qualified.

More from The Advocate:

Judge says qualifying must re-open in La. congressional race

Capitol News Bureau

Update: 11:05 a.m.

PLAQUEMINE—A judge today ordered state officials to reopen the sign-up period for candidates in the contest 5th District congressional race.

District Court Judge Allan Edwards said incumbent U.S. Rep. Rodney Alexander tried to manipulate the system when he switched from Democrat to Republican shortly before the original sign-up period for the race Aug. 6.

His switch left the race with a field of two Republicans and one low-profile Democrat. Democrats had filed a lawsuit seeking to get Alexander removed from the race because of his switch or to find some other way to get a better-know Democrat in the field.

Judge Edwards ruled this morning that state officials must reopen the period to sign up candidates, probably this week. Alexander can requalify if he wishes, the judge said.

The two other candidates can remain in the race without signing up again; in addition, any other candidates who would qualify for the race can sign up, too.

The election is Nov. 2.

Shouldn’t the one Dem candidate, Tisa Blakes (?), be a little unhappy at this turn of events? I don’t suppose she has filed as part of this, but it wouldn’t be out of line.