The full picture

Eric nicely summarizes how much public funding Canada's political parties actually receive. And it's clear from the full view that the Cons' main goal in trying to eliminate per-vote funding is to exacerbate the inequalities in a system that already favours them:

Combining the per-vote subsidy, the tax credits on donations, and the reimbursements for the 2008 national and local campaigns, the Conservatives would have received about $42.2-million from public sources in 2009, the last year for which complete financial data is available. The Liberals received $28.1-million, the New Democrats $19.8-million, the Bloc Québécois-$8.2 million, and the Greens $4.3-million.

With each party getting $2 per vote from taxpayers, it is a level playing field. But including all sources of public funding makes it far less equitable. In 2009, the Greens would have benefited from about $4.59 in public funding for every vote cast for them in the 2008 election. That amount is $5.91 for the Bloc, $7.75 for the Liberals, and $7.87 for the New Democrats. Because of their strong fundraising organization and the large amount of money spent in the 2008 election, as well as the per-vote subsidy, the Conservatives benefited most from public funding in 2009, at $8.11 per vote.