Appealing to Democrats requires appealing to a lot of different kinds of people with different interests. Republicans are overwhelmingly dependent on white voters. Democrats are a coalition of liberal whites, African Americans, Hispanics, Asians and mixed-race voters. Republicans are overwhelmingly dependent on Christian voters. Democrats are a coalition of liberal and nonwhite Christians, Jews, Muslims, New Agers, agnostics, Buddhists and so on. Three-quarters of Republicans identify as conservative, while only half of Democrats call themselves liberals — and for Democrats, that’s a historically high level.
As a result, winning the Democratic primary means winning liberal whites in New Hampshire and traditionalist blacks in South Carolina. It means talking to Irish Catholics in Boston and atheists in San Francisco. It means inspiring liberals without arousing the fears of moderates. It’s important preparation for the difficult, pluralistic work of governing, in which the needs and concerns of many different groups must be balanced against each other.
The Democratic Party is not just more diverse in who it represents; it’s also more diverse in whom it listens to. A new Pew survey tested Democratic and Republican trust in 30 different media sources, ranging from left to right. Democrats trusted 22 of the 30 sources, including center-right outlets like The Wall Street Journal. Republicans trusted only 7 of the 30 sources, with PBS, the BBC and The Wall Street Journal the only mainstream outlets with significant trust. (The other trusted sources, in case you were wondering, were Fox News, Sean Hannity, Rush Limbaugh and Breitbart.)