This is why Democrats suck at politics.
Want to not suck at politics? Shut the Legislature down until Republicans return, and run non-stop ads starting now eviscerating the Republican Senators for literally fleeing the state to avoid doing their jobs.
Democrats need to hire some god-damned Republican strategists to teach them how to bare knuckle brawl, because they're still playing with fucking kid gloves. This has been my long-standing problem with the Democratic party, they're a bunch of fucking spineless wimps.
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Actually, it is by state law. Hence why the governor sent out law enforcement to try to bring them back to do their jobs. The problem is they fled the state, so Oregon law enforcement doesn't have jurisdiction to bring them back.
It was bullshit the one time they did it, just as it's bullshit the few times Republicans have done it. This is not how effective, functional legislatures work.
Citation needed*
That's not their job. Their job is to represent their constituents within their districts, not those from other districts.