Minnesota’s Democratic state representatives walked out Tuesday, failing to show up for the first day of the legislative session to deny the state House a quorum amid a fight over how to manage a chamber that’s set to be equally divided.

After Minnesota Secretary of State Steve Simon, who control’s the chamber’s gavel between sessions, adjourned the state House and said there was no quorum, state House Republicans nonetheless moved to convene a legally questionable session in a half-empty…