Nebraska constitution
Article III: legislative
Section 11

The Legislature shall keep a journal of its proceedings and publish them, except such parts as may require secrecy, and the yeas and nays of the members on any question shall at the desire of any one of them be entered on the journal. All votes shall be viva voce. The doors of the Legislature and of the committees of the Legislature shall be open, except when the business shall be such as ought to be kept secret. The yeas and nays of each member of any committee of the Legislature shall be recorded and published on any question in committee to advance or to indefinitely postpone any bill.