This is easy!
If you are a Democrat in charge of counting votes in an election, the Democrat candidate gets 6 votes in each of two precincts, and the Republican gets 5 votes in one precinct and 8 in the other, you throw away 3 of the Republican’s votes in the second precinct. That way the Democrat wins both precincts and the election. And anyone who complains is racist!
Did you remember to carry the bum?
(Old Firesign Theater reference.)