Uh, no, it doesn't.
1992- Clinton won.
1996- Clinton won.
2000- Gore won the POPULAR vote. That the courts stole it was sort of meaningless. Fact is, Gore won the vote. Probably won a majority in Florida, too, if someone had bothered to count the vote.
2004- Bush actually won that one- barely. Incumbant President, during a war, awful opponent, massively outspent, and he won by a whopping 2%, the lowest victory margin an incumbant got since 1916.
2008- Obama won, with the greatest number of votes anyone had ever gotten in history.
Not to worry. It will be 5 out of six.
Remember Kennedy won with a low margin as well.
Not relevent to my original point, but okay.
Here's the thing. If you look at history, one party dominates.
From 1861-1932, the GOP dominated the electoral scene. The Democrats won with Cleveland and Wilson- barely- but mostly, it was the GOP in walks. Then the Great Depression hit, and that was the end of GOP dominance.
From 1932-1968, the Democrats dominated. The only Republican winner in that lot was Eisenhower, who essentially had to admit the Democrats were right about the role of government and foreign affairs, embracing Keynesian economics and rejecting isolationism.
The ground shifted again in 1968 thanks to the Damned Hippies. Republicans got the White Middle Class back by playing on their fears. So from 1968-1992, the only winner the Democrats had was Jimmy Carter, who was disliked by Democrats because he was practically a Republican. And he only barely won after Watergate decimated Republican leadership. If Ford hadn't pardoned Nixon, he'd have probably won.
1992 the ground shifted again. Minorities became a larger slice of the pie, and suburban voters started turning back to the Democrats. So Clinton won. Gore should have won, but the court stole the election, and Obama won and will win again. Only because Bush stole the election in 2000 and we've never voted out a president in wartime, did Bush win- barely.