To reach the target set of voters Democrats absolutely must win in 2020, the most important countervailing message against Trump is simple: He lied to you. Political lies are perfect weapons for dividing previously loyal voters from the pack, and history is replete with examples. George H. W. Bush went to his grave knowing that, while he’d done the right thing for the government in 1991, the tax increase he supported broke a promise to the GOP base. “Read my lips” was the political lie that the GOP’s rank and file would never forgive. Barack Obama promised “You can keep your doctor” and lost
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