LA · State rules
Louisiana
Primary system
Multi-party / top-N
Who can vote in a party primary
Mixed: new party primaries for some offices from 2026; majority-vote system for others
Party-switch deadline
30 days before the primary election
Note: VERIFY: Louisiana system changed in 2026; confirm which offices use party primaries.
This cycle's dates
Next primary
Saturday, May 16, 2026
Party-switch deadline
Thursday, April 16, 2026
Registration deadline
Thursday, April 16, 2026
Date shown is for U.S. Senate/local races. Louisiana U.S. House primary is Nov 3, 2026 (new majority-vote system). State legislative/statewide races are odd-year (next: 2027).
Computed from the standing rule + NCSL's 2026 primary calendar (fetched 2026-07-27). Not yet checked against the official state source for weekend/holiday rollover or this cycle's final confirmation — verify before relying on it.
This state's rules changed recently or fall outside our standard sources. This page is flagged for manual verification before its data should be relied on — check the official link below directly.
Draft sourced from NCSL. View source.