A realistic look at the past couple generations of Democrat victories:
1960: Joe Kennedy pays off anyone and everyone for JFK to win. Nixon loses by a cunt hair. Had Joe Sr. not paid off enough of the Kansas City mob, Nixon would have won.
1964: Barry Goldwater was such a wretched cunt that he seemingly took delight in losing in the worst way possible. He also echoes. Almost seems like he threw the election.
1976: Carter won due to residual resentment about Nixon's resignation, something that seems like child's play compared to the Clinton and Obama eras of government.
1992: Bill Clinton won because Ross Perot ran, acting as a spoiler for George H.W. Bush. Given that Bush was the second choice of the vast majority of Perot voters, had Perot not run, Bush would have won and Rapin' Bill likely would have been stuck as a Governor-turned-Senator sticking his crooked dick into Little Rock anchorwomen.
1996: Probably the only Democrat victory that seemed to be earned.
2008: The economy went tits up to the point where no Republican was ever going to get elected.
2012: Obama and Congressional Democrats pushed off the worst aspects of Obamacare until 2013 and outright admitted it. People knew Obamacare was shit but didn't know how shit it was until it was too late. Democrats and the media did whatever they could to push racial tension as well as the "War on Women" BS. This was probably the dirtiest Presidential election in the past several generations. Maybe not since the Gilded Era where they would just hire off-the-boat micks to beat up the opposition.
In conclusion, a lot of times Democrats win for reasons other than the quality of their candidates, which are usually awful because they do so much horse trading and backroom dealing that the unlikable cunts like Hillary Clinton or John Kerry float to the top.