Most likely she won popular votes in democrat controlled states, Calif., NY, Illinois and a few others where democrats control, and where there is no discipline to prevent voter fraud.
One example is in San Pedro, Calif. which is a borough of Lost Angeles city. Over 80 ballots were delivered to a house, addressed to voters for vote-by-mail. The people did not live there. They might not have lived anywhere.
Multiply use of tactics like this,, and you easily reach 6 figure margins in major democrat controlled cities.
If you challenge this, you are dubbed a racist. Maybe even called alt-right, no less.