The seats that Matt Gaetz and Tim Waltz won by 30 points in November are the subject of a special election. Gaetz held the 1st District, and Waltz the 6th. The 1st seems much more secure, but polling in the 6th shows Democrat Josh Weil either leading or trailing Republican Randy Fine by 3-4 points. Even with a loss that seems like a massive swing in sentiment, and might give another reason as to why Trump pulled the nomination of Elise Stefanik.
https://thehill.com/homenews/campaign/5220692-bernie-sanders-josh-weil-florida-6th-race/
https://thehill.com/homenews/campaign/5220692-bernie-sanders-josh-weil-florida-6th-race/