Which Democratic US Senator set a record for margin of victory with 71.2% in the 2004 election only to be surpassed by Kirsten Gillibrand's 72% of the vote  in 2012?
United States Senate election in New York, 2004: The 2004 United States Senate election in New York took place on November 2, 2004 along with elections to the United States Senate in other states as well as the presidential election, elections to the United States House of Representatives and various state and local elections. United States Senate election in New York, 2004:  Incumbent Democratic U.S. Senator Chuck Schumer won re-election to a second term with 71.2% of the vote, a then-record margin of victory for any statewide candidate in New York's history. United States Senate election in New York, 2004:  The record was surpassed by Kirsten Gillibrand when she won re-election to a first full term in 2012 with 72% of the vote. Kirsten Gillibrand: Kirsten Elizabeth Gillibrand (née Rutnik; ; born December 9, 1966) is an American attorney and politician who since 2009, has served as the junior United States Senator from New York, alongside the Democratic Leader of the United States Senate, Chuck Schumer.
Chuck Schumer