In 1968, the incumbent president Lyndon B. Johnson seemed a shoo-in as the Democratic candidate for president. Even with falling approval ratings, he was strong enough to keep a tight grip on his party -- or so he thought.As formidable as Johnson was, there was one name he could not compete against: Kennedy. When Robert F. Kennedy, brother of slain President John F. Kennedy, threw his hat into the ring late in the race, Johnson knew his days were numbered and withdrew from the election. That was the last time an incumbent president was not nominated for a second term.Now 56 years later, the incumbent, Democratic President Joe Biden looks to be “a sure thing” for his party’s nomination. But could history repeat itself? Could the Kennedy name once again prove strong enough to shake things up within the Democratic Party?1968 was one of America’s most turbulent years. President Johnson had claimed America was winning the Vietnam War, yet the year began with the Tet Offensive, North Vietnam’s largest offensive action to date. At home, the Vietnam protest movement was at its height and most of the anger was aimed at Johnson. Protesters felt Johnson had lied to them about the war. And while he had successfully passed two major Civil Rights bills and created Medicare and Medicaid, the war overshadowed Johnson’s accomplishments and his approval ratings plummeted.Even with low numbers, Johnson, who had become president with the death of JFK and soundly won the Electoral College vote 486-52 in his 1964 reelection, seemed a sure thing in ‘68. The one name that could disrupt Johnson’s plan: Robert F. Kennedy Sr.In a time of mayhem, the Kennedy name resonated with voters who still felt the loss of JFK. Surely to Johnson’s relief, not wanting to divide the party, Kennedy announced “under no foreseeable circumstances” would he run for president. The case seemed closed; Johnson would win the nomination.However, with Kennedy’s announcement, another anti-war Democratic senator from Minnesota, Eugene McCarthy, entered the race. McCarthy seemed a long shot, so it shocked the political world when he won the first primary in New Hampshire.Now, with the realization that Johnson was beatable, Kennedy changed his mind and decided to enter the race.While the two had been rivals for some time, Kennedy cited Johnson’s continued support of the war as the main reason for his decision to run. Kennedy hoped to consolidate the anti-war ...