Even if candidates don’t talk about it, race will be among the most important factors in the outcome of the 2016 presidential election. The Democratic Party has the support of 56 percent of Latinos, 65 percent of Asian Americans and 80 percent of the black population, according to the Pew Research Center. The share that supports the Republican Party is disproportionately white.For decades, those racial divisions have shaped how individual candidates expect to perform at the polls. If Republican candidates were as popular among minority voters as they are among white voters, winning elections would be much easier. And Democrats would dominate the polls today if they had maintained the support of the white electorate.They didn’t. Democrats began losing the support of white voters after World War II, particularly in the South. During the civil rights movement, white Southerners left the Democratic Party in droves.