That is a question that baffles logical thinking people. Basically the Democratic party appeals to “special interests groups” i.e.: feminists, racial minorities who want special rights and privileges, folks on welfare, gay or lesbians, wacko environmentalists, some religious groups who believe in world government or that it is sinful to process more than your fellow man regardless of the circumstances.
To add to the confusion there are straight White and mainland Asian males who also vote to discriminate against themselves when they vote Democratic. I assume that they are either “feminists”, extreme environmentalists, or they are communists who want to control everyone’s lives. The majority of Americans do not belong to one of the special interest groups. It just doesn’t make sense. Maybe our liberal friends can explain it?