TORONTO - Ontario Liberals and New Democrats are meeting again today, trying to negotiate a deal before Tuesday's crucial budget vote to keep the minority government alive and avoid another election.

Sources with both parties confirm the talks continued all weekend, but aren't saying when NDP Leader Andrea Horwath and Premier Dalton McGuinty will hold a face-to-face meeting.

Horwath told thousands of protesters gathered on the front lawn of the Ontario legislature Saturday she would rather avoid triggering another election by defeating the budget.

But she vowed to keep pushing to change what she called a "profoundly flawed" fiscal plan from the Liberals.

Last week, Horwath dropped a key NDP demand to have the provincial portion of the HST removed from home heating bills, but she still wants a surtax on incomes over $500,000.

The Progressive Conservatives vow to vote against the budget on Tuesday, so the Liberals need support from at least two New Democrats to avoid their defeat.