Danielle Allen, Washington Post
Trump is rising by taking advantage of a divided country. The truth is that the vast majority of voting Americans think that Trump is unacceptable as a presidential candidate, but we are split by strong partisan ideologies and cannot coordinate a solution to stop him. Similarly, a significant part of voting Republicans think that Trump is unacceptable, but they too, thus far, have been unable to coordinate a solution. Trump is exploiting the fact that we cannot unite across our ideological divides.