The popular vote doesn't count when unpopular things that democrats champion are on the ballot. Then it's "the will of the people be damned".To truly understand the will of the people, look at the election map. The Democrat areas are narrowly defined at the coasts. The People who populate this country will never agree to have their voices silenced and be ruled by the congested cities along the coast.
When democrats are a national party again they can talk about the will of the people.
When you win the national vote by 3 million, you are a national party.