SAN JOSE, Calif. --
By NBC11's Daniel Garza

Speaking to California Democrats at their statewide convention, former President Bill Clinton told delegates to "chill out," over concerns the contentious race for the presidential nomination is tearing apart the party.

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"Don't let anybody tell you we are weakening the Democratic Party," he said. "Chill out we're going to win this election, if we just chill out and let everybody have their say. This is a good thing."

Clinton said he was confident a Democrat would win the presidency, whether it was his wife Sen. Hillary Clinton or Sen. Barack Obama.

Clinton got a rousing welcome from those waving his wifeÂ’s campaign signs and those of her rival.

The former president touted his wifeÂ’s stands on the economy, energy, the war in Iraq and education policy.

"Knowing what I know, I would be for her even we had never been married because I think she's the best candidate I've supported in 40 years in the Democratic primary," he said.

Before his speech, President Clinton met in private with undecided superdelegates to urge them to support Sen. Clinton.

Nearly a third of California's 65 named superdelegates are undecided, according to the Associated Press. Unlike the pledged delegates won in primaries and caucuses, superdelegates are free to choose which candidate to support.

No national Democratic heavyweights, such as New Mexico Gov. Bill Richardson or Sen. Ted Kennedy, were available to speak on ObamaÂ’s behalf.

The task of speaking before President Clinton to pump up Obama supporters belonged to San Francisco District Attorney Kamala Harris.

Harris is the first African-American woman ever elected district attorney anywhere in California.

Harris said ObamaÂ’s message of hope and change was a personal message for her, because her parents marched during the civil rights movement of the 1960s.

Obama supporters interrupted HarrisÂ’ speech with chants of "Yes we can." Harris did not mention the fight over superdelegates or calls for Sen. Clinton to give up her fight for the nomination.

But without mentioning Sen. Clinton, Harris suggested that Obama was better suited to unify the country facing a war, global climate change, and a weak economy.

"To meet these great challenges the next president of the United States must be more than an improvement on the incumbent," she said. "WeÂ’ll need leadership to inspire people to do more, to dream more, to achieve more and become more than they are today."