Liberal Leader Michael Ignatieff and Prime Minister Stephen Harper were holding a rare face-to-face meeting Tuesday afternoon for talks that could determine whether Canadians go to the polls this summer.

Prime Minister Steven Harper responds to a question during a press conference at the National Press Theatre in Ottawa on Monday. (Adrian Wyld/Canadian Press)Liberal MP Ralph Goodale led off a raucous question period in Ottawa by telling the House of Commons that the meeting was being held as he spoke.

The location of the meeting was not disclosed, but it is believed the two men were inside the Prime Minister's Office at Parliament's Centre Block.

Earlier in the day, Ignatieff said he wanted "clarity" from Harper on four issues to avoid toppling the minority Conservative government in a confidence vote later this week over the Tories' latest economic progress report.

The latest economic progress report showed roughly 3,000 infrastructure projects across the country are getting underway as part of the government's $22.7-billion stimulus plan and that about 80 per cent of the plan's funding has already been allocated.

"They can't ask me to vote for money if they can't tell me how they've spent it already," Ignatieff said.

Ignatieff said he wants to get "clarity" from the government on questions surrounding