Minnesota House leaders say that the House will start debate on the contentious unionization bill before 7 a.m. Sunday.

The measure, passed by the Minnesota Senate after a record-setting 17 hour debate, brought hordes of supporters and opponents to the Capitol on Saturday, urging lawmakers to vote their way.

House Speaker Paul Thissen said Saturday afternoon that the House will begin debating the bill, which would allow in-home child care workers and personal care assistants to vote on whether to unionize, "in this legislative day."

A legislative day ends at 7 a.m.

"And I anticipate that that probably...that it won't end this legislative day," Thissen said.

Already lawmakers have filed nearly 120 proposed amendments to the measure and included some amendments to the amendments, which signals that the House debate will be lengthy.

If the House passes the measure without changes, it would be delivered to the governor for his signature. Gov. Mark Dayton supports the unionization measure.