Horwath says she plans to do that by strengthening the ban on partisan government advertising and expanding the Ontario Ombudsman's oversight into healthcare, long-term care and the province's troubled Ornge air ambulance service.
She says the "Respect for Ontarians Act" would be introduced within 30 days of forming a New Democrat government.
Horwath has been spending much of the campaign leading up to the June 12 election trying to frame Premier Kathleen Wynne's Liberals as "corrupt."
She says the Liberals have put their self interest ahead of the interest of the public, and an NDP government would "clean that stuff up."
The Liberals, meanwhile, have tried to dismiss the NDP and frame the campaign as a two way race between themselves and the Progressive Conservatives.