If Democrats win this race, the GOP party is dead.
Democrats would have to nominate either a terrible candidate or a complete nobody to lose this election. Though typically after two terms of one party (or one term and they retire), they're sick and tired of them and they vote for the opposite party. That's how we got Mike Foster (R) followed by Kathleen Blanco (D) followed by Bobby Jindal (R) followed by John Bel Edwards (D). Assuming the pattern continues, I'm gonna guess the next governor will be a republican, but Landrieu could make this a tighter race.
Democrats?
I think you meant to say Republicans.