Redistricting authority: 
U.S. Congressional Districts – Legislative.  The Legislature is tasked with reapportioning the state in the second year following the national decennial census.  They are supposed to pass a plan by joint resolution during regular session, but if they don’t, the Governor will call a special 30-day session where redistricting is the only task the Legislature tackles. If they don’t finish during the 30-day session, within 5 days the FL Attorney General is to petition the state Supreme Court to make an apportionment plan, which they have to do within 60 days.  If the Legislature DID pass a joint resolution during their session, it goes to the Supreme Court to determine validity. If the Supreme Court validates the decision, it has the effect of law.  If it’s not validated, it goes back to the Legislature for a special 15-day session (extraordinary apportionment session) where they fix the problems. Then it goes back to the Supreme Court. If either the extraordinary session fails to result in either a joint resolution OR an acceptable plan in the eyes of the court, the court then has 60 days to make its own plan, and it is filed with the Attorney General.  The Governor has no veto power over either the legislative or Supreme Court plan.

State Legislative Districts – Legislative. Same process as above.