US Politics
I believe this is because they have to have a vote to adjourn and they haven't always had enough votes(simple majority) for that. So, at the beginning of the day the clerk presides as Speaker and calls a vote as long as there's a quorum present.
If after a vote in which they fail to elect a Speaker they don't adjourn, and people leave anyway, then they could conceivably hold a vote in which now the number to win is lower because the people who aren't there are non-voters. Depending on who left that could give the Speaker job to Jeffries. Obviously the Republicans won't leave and risk that, and Democrats will keep voting hoping that Republicans tire of it and leave.
So, anyway, they continue to vote until there's a majority who agree to adjourn until the next day, then the clerk starts the whole process over. It's essentially stuck in a loop until a Speaker is elected who can make the next procedural moves about how this Congressional session will function.
US Politics
To me the most interesting one will be today. If they don't elect McCarthy straight off in the first vote we'll see if anyone wants to push it through the weekend or if they're all so eager to get on their flights home that they'll get along for one vote and willingly adjourn for the weekend.
US Politics
@BE
Ah, interesting, thanks! So the clerk could (perhaps?) potentially just sit there with feet on desk, saying oh yeah we'll get around to voting again soon, until told that it was worth taking another vote, but that would probably violate some procedural rule about delay (and/or they're doing malicious compliance heh heh).
Violating procedure like that would be embarrassing and chaotic, but they're already that for sure...