 So for a lot of voters, Biden's performance last night was in line with very low expectations, which has been showing up all year in places like his stubbornly low approval rating. NPR's Tamara Keith, thank you so much. You're welcome. We're going to turn now to NPR correspondent Deirdre Walsh, who covers Congress. And she's been looking at how Biden's performance of the debate could affect control of the House and Senate, which, of course, are also up for grabs in November.