Complex sentence: After leaving Goldman Sachs, Murphy served from 2006 to 2009 as the National Finance Chair of the Democratic National Committee where he worked with Howard Dean to build the party from the grassroots up.
Split into simpler sentences: After leaving Goldman Sachs, Murphy served from 2006 to 2009 as the National Finance Chair of the Democratic National Committee. There he worked with Howard Dean to build the party from the grassroots up.