In WWII, it was part of German propaganda policy to tell "The Big Lie." Tell it often enough, and with enough conviction, and people will believe.
Odamna seems to have revised the rule to: Tell so many small lies that nobody can fact check all of them. Eventually, they will tire of the exercise and just believe you.
The sad thing is, for a good part of the population it seems to be working.
Perhaps you can't fool all the people all the time. But if you speak with persuasive authority, you can fool enough of the people enough of the time to make it to the White House.
From a discouraged Crusader