Nixon won a resounding victory in the important New Hampshire primary on March 12, with 78% of the vote. Anti-war Republicans wrote in the name of New York Governor Nelson Rockefeller, the leader of the Republican Party's liberal wing, who received 11% of the vote and became Nixon's new challenger. Rockefeller had not originally intended to run, having discounted a campaign for the nomination in 1965, and planned to make United States Senator Jacob Javits the favorite son, either in preparation of a presidential campaign or to secure him the second spot on the ticket. As Rockefeller warmed to the idea of entering the race, Javits shifted his effort to seeking a third term in the Senate. Nixon led Rockefeller in the polls throughout the primary campaign, and though Rockefeller defeated Nixon and Governor John Volpe from Massachusetts primary on April 30, he otherwise fared poorly in state primaries and conventions. He had declared too late to get his name placed on state primary ballots.