Robert Kennedy's death altered the dynamics of the race. Although Humphrey appeared the presumptive favorite for the nomination, thanks to his support from the traditional power blocs of the party, he was an unpopular choice with many of the anti-war elements within the party, who identified him with Johnson's controversial position on the Vietnam War. However, Kennedy's delegates failed to unite behind a single candidate who could have prevented Humphrey from getting the nomination. Some of Kennedy's support went to McCarthy, but many of Kennedy's delegates, remembering their bitter primary battles with McCarthy, refused to vote for him. Instead, these delegates rallied around the late-starting candidacy of Senator George McGovern of South Dakota, a Kennedy supporter in the spring primaries who had presidential ambitions himself. This division of the anti-war votes at the Democratic Convention made it easier for Humphrey to gather the delegates he needed to win the nomination.