 Complete the following phrase:  At the start of 1968, most Democrats expected that President Lyndon B. Johnson would be re-nominated. Those expectations were shattered by Senator Eugene McCarthy, who centered his campaign on opposition to Johnsons Vietnam policies. McCarthy narrowly lost to Johnson in the first Democratic Party primary on March 12 in New Hampshire, and the closeness of the results startled the party establishment and spurred Senator Robert F. Kennedy of New York to enter the race. Two weeks later, Johnson told a stunned nation that he would not seek a second term. In the weeks that followed, much of the momentum that had been moving the McCarthy campaign forward shifted toward Kennedy. Vice President Hubert Humphrey declared his own candidacy, drawing support from many of Johnsons supporters. Kennedy was 