Poll shows close contest between Hillary Clinton and Bernie Sanders in California

The Democratic primary appears to have narrowed in California, according to a new poll from the Public Policy Institute of California.

The poll shows a statistical tie between Hillary Clinton and Bernie Sanders among likely Democratic voters. Clinton has 46% support, Sanders has 44% and the margin of error is plus or minus 5.7 percentage points.

A previous poll, released in March, had Clinton leading 48% to 41%. The margin of error at that point was plus or minus 6.2 percentage points.

The survey counts both registered Democrats and independents who say they’ll cast ballots in the Democratic primary as “likely Democratic voters.”

But any independents who want to vote in the Democratic primary on June 7 woud have needed to register with the party already (the deadline passed Monday) or request a Democratic presidential ballot.

When only registered Democrats are counted, Clinton leads 49% to 41%, which could help give her an edge.