Biden pips Warren in Massachusetts primary

Joe Biden has won Massachusetts' Democratic presidential primary, beating its home-state candidate Elizabeth Warren.

Massachusetts was considered a must-win state for Senator Warren, and election officials predicted high turnout for the Super Tuesday vote.

Nearly 230,000 voters took advantage of early voting last week, the first time the state has allowed early voting in a presidential primary.

The state has 91 delegates at stake.

Biden has won Arkansas, Minnesota, Tennessee, Alabama, Oklahoma, North Carolina and Virginia. Bernie Sanders has won Utah, Vermont and Colorado.