Irish leaders were among those contacted by the Clinton campaign as it became obvious that the late Senator Edward Kennedy was considering backing Senator Barack Obama over Senator Hillary Clinton.

The feeling was that Irish Americans close to Kennedy might make the difference in persuading the Massachusetts senator to stay neutral rather than throw his support behind Obama.

In the end calls were made, but they had no impact in changing the senator's mind. The senator's wife Vicki, as well as Caroline Kennedy, were apparently very influential in convincing Kennedy to make the move at this time.

It was certainly a surprise. The Kennedys and Clintons had formed a genuine bond when Bill Clinton was in the White House.

Some of it centered around Northern Ireland, where Kennedy was the chief persuader in getting Clinton to grant Sinn Fein leader Gerry Adams a visa in early 1994 despite ferocious opposition from the British government.

That decision worked out very well for both men, giving Clinton one of the great gains of his presidency in foreign policy and rehabilitating Kennedy in the eyes of many Irish Americans who felt he had become too tied to the British and Irish government positions on the North.

The Kennedy endorsement of Obama was not entirely surprising, however. Kennedy has always had a leaning towards the younger dynamic candidate rather than the status quo. He was very taken with Senator John Edwards when he first entered the Senate and saw him as a future president.

Edwards, of course, has disappointed with his poor finishes in the primaries, but Kennedy probably felt that Obama represented the last throw of the dice for him in terms of the opportunity to influence a presidential race. At this late stage in his life, the liberal lion knew he would not have many more opportunities to impact a national election.

Bill Clinton was hardly pleased by the endorsement. He told friends that he had given Kennedy pretty much everything he had asked for during his presidency, and there was clearly a sense of betrayal over Kennedy's surprise move.

But politics ain't beanbag, as has been often quoted in this campaign.

Kennedy staffers were quoted in one report as stating that Obama's support for Kennedy's failed immigration bill was also a major factor in his decision to throw his support to him.

Susan Milligan wrote in the Boston Globe, "Kennedy was also impressed by Obama's deep involvement last year in the bipartisan effort to craft legislation on immigration reform, a politically touchy subject the other presidential candidates avoided, the (Kennedy) associate said."

In fairness to Senator Clinton she supported that bill and voted for all of its provisions, but obviously Obama made a far deeper impression on Kennedy with his backing.

Kennedy provided a link to the old blue collar, labor coalition that Obama initially had trouble convincing to support him during this primary campaign.

Now that Ted Kennedy has passed, the question remains if Obama really is the second coming of JFK, as the former president's brother clearly believed he may be.

The reality is that those are impossible shoes to fill, as much for the legend as for the reality of the JFK legacy. Obama can only continue to put one foot in front of the other and do his best. The Kennedy endorsement was obviously important, but in the end he will have to achieve greatness on his own dime.