There are two kinds of math in the Democratic presidential race: delegate math and momentum math. Backers of former secretary of state Hillary Clinton prefer the delegate math, for obvious reasons. She has a solid lead in pledged delegates and, when superdelegates are added in, her advantage becomes overwhelming.
Backers of Vermont Senator Bernie Sanders prefer the momentum math, for equally obvious reasons. Since March 22, Sanders has won six of seven state contests. He also dominated the “global primary” organized by Democrats Abroad. Read more.