Why are Liberals always either denying or revising history?

Once again, Liberals are completely ignoring and rivising history. Every single Presidential election that Democrats lost in the past 35 years was exactly the same as it is at this point. The news media has got Obama already taking the oath of office just like they did with these losers at this very point and time in past elections; 1980 Carter up by 20 points over Reagan. 1984 Mondale up18 points over Reagan. 1988 Dukakis up 12 points over George H.W. Bush. 2000 Gore up 6 points over Goerge W. Bush. 2004 Kerry up 6 points over George W. Bush. So I ask......