Joe Biden has gotten a big boost from a top Hollywood fundraiser.<br />The fundraiser is James Costos, a former HBO executive and major Democratic donor.<br />He served as ambassador to Spain during the Obama administration.<br />Costos is supporting Joe Biden for the Democratic nomination.<br />After the endorsement, Costos will plan a fundraiser and other events for Biden.<br />Biden has struggled with financing ever since losing the first three primaries and caucuses.
