Donald Trump has applied some of the same tactics he learned as a lifelong salesman to politics, but with a darker and more ominous tone than he probably used to close deals, an analyst wrote for CNN Tuesday. Most politicians offer voters an optimistic vision and promises of change, but Trump issues dark warnings about illegal immigrants, foreign nations, conspiratorial forces and economic ruin — and it seems to work, wrote Stephen Collinson. “The Republican nominee’s warnings of disaster are not a new wrinkle,” Collinson wrote. “In 2020, with Covid-19 rampant, he warned that if he was not ree…