Although many in the national media and the parties are treating the 2024 presidential nomination processes as a done deal, the thing that will make this year's Super Tuesday most meaningful are the number of congressional races that will be decided in Republican and Democratic primaries across the US.

Five states are conducting congressional primaries on Tuesday, March 5: Alabama, Arkansas, California, North Carolina, and Texas. In total, this accounts for 115 congressional seats or approximately 26% of seats in the US House. This does not include US Senate races.