A quiet day on the Ontario campaign trail turned into a war of words over a proposed Mississauga power plant on Saturday as the Liberals announced plans to relocated the gas plant and the Conservatives accused them of playing politics.

Several Liberal candidates gathered in Mississauga to announce the Eastern Power Ltd. gas-fired plant would not be built on the Toronto-Mississauga border.

Candidates Charles Sousa, Donna Cansfield, Laurel Broten and Dipika Damerla said the neighbourhood has grown considerably since the plant was proposed in 2005 and that they would find a new location to build the plant.

They said the 280-megawatt plant would not be built in Etobicoke or Mississauga. The Liberals did not say where the new plant would be built.

"As our neighbourhoods change, we have to be mindful of how our energy system impacts local communities," Damerla said in a statement. "I'm pleased that by working together with the people of Mississauga we're moving the location of this gas plant."

The Progressive Conservatives said the announcement was a "show of panic" meant to save Liberal seats in the area.

A statement from the party accused Liberal Leader Dalton McGuinty of cancelling power plants for political gain in the past, including one in Oakville last year.

The cancellation of that plant, which was near the Mississauga border, left the province at risk of a $1-billion lawsuit from the builder.

The power plant spat highlighted an otherwise quiet day on the campaign trail, as both McGuinty and Progressive Conservative Leader Tim Hudak took the day off from stumping for votes.

NDP Leader Andrea Horwath made an appearance in Fort Erie, Ont., on Saturday, where she promised to spend $10 million annually to re-open two Niagara-area hospital emergency rooms.

Horwath said the emergency rooms – one at Fort Erie's Douglas Memorial Hospital and another in nearby Port Colborne – have been closed for years and need to be open to ensure access to health care.

Horwath was accompanied by the family of Reilly Anzovino, a teenager who died after a 2009 car crash, when her ambulance had to travel 20 kilometres because Fort Erie's emergency room was closed.

With files from The Canadian Press

Watch the leaders' debate live on Tuesday, Sept. 27 online @ CTVToronto.ca and on CTV starting at 6 p.m. ET

Watch live election coverage on Thursday, Oct. 6 online @ CTVToronto.ca, on CTV and on CTV News Channel starting at 9 p.m. ET