I wasn't really politically attuned in the 70s, but it seems that the attack on Nixon would be as likely today as it was then. Despite his many liberal actions, he WAS, after all, a Republican.
W wasn't particularly conservative, either, spending like a drunken Democrat and even expanding Medicare. Still, the Ds and the press dutifully demonized him every day of his presidency, with just a few days off after 9/11. I do believe it's the R what makes 'em do it.