On the subject of honest/deceptive vampiric toy dogs: Was the reason why Berlusconi won so many elections and emerged rose-scented from so many shitstorms precisely the fact that he was unapologetically shitty and honestly dishonest? Voters interpreted his blatant shittiness as a lack of duplicity – there was no flipside to him, or rather, he had two reverse sides without any politically correct facade at all. It would be very reassuring to have a politician who's perfectly consistent in his behaviour, in telling untruths, for example: Just believe the exact opposite of what he says, and you'll always know the truth – it's foolproof! What could possibly go wrong? "I'll vote for him because then I'll at least know what I'm getting, and that can never be a bad thing in politics, can it?"
This kind of voting strategy would value predictability over everything else – it's essentially a clever ruse to avoid getting duped by the system, naturally appealing to people who feel powerless and "betrayed" by the democratic process. If you think that the sole purpose of the election system is to deceive you and betray your expectations, then simply getting what you asked for – whatever that may be – means you have already succeeded at gaming the system. "I've been bamboozled by the system so many times, but this time it'll be different! I'll vote for the guy who promises sweet, impossible nothings with a straight face, and that'll show 'em who has all the power in a democracy – me!"
But it would be naive to assume that this could adequately explain the popularity of Berlusconi or Mr Storm Trumper Donald-I-wish-I-could-just-stop-thinking-about-him-Trump. More likely it's just a rationalization for assholes being drawn to other assholes, and people being generally prone to wishful thinking and misplaced trust. Believing in a fraud feels just as good as oft-times better than the real thing, and it's damn hard to give up that placebo even when confronted with compelling evidence to the contrary.