Bob Fitrakis and Harvey Wasserman have an interesting article entitled Why Can’t the Left Face the Stolen Elections of 2004 & 2008? They talk about how various "left" pundits and magazines (The Nation and Mother Jones being the ones they mention) are trying to convince us that the Republicans did not steal the 2004 election (with the Democrats acquiescence).
Thankfully, the David Cobb, the Green Party presidential candidate, the Libertarian Party presidential candidate and hundreds of volunteers attempted to get to the truth. You can find what they found at the Vote Cobb website.