Senator Barack Obama’s resounding victory in Wisconsin on Tuesday echoed in New Jersey today, where he won the backing of two additional superdelegates, including one who had previously declared for his opponent, Senator Hillary Rodham Clinton.



One of the superdelegates, State Senator Dana Redd, who had backed Mrs. Clinton, said she switched because Mr. Obama’s growing support had convinced her that he was the best choice to win the general election and lead effectively as president.

The other Democratic superdelegate, Donald Norcross, a labor leader and co-chairman of the powerful Camden County Democratic organization, had been uncommitted. But he said that Mr. Obama’s strong campaign and ability to attract voters from a wide array of demographic groups provided evidence that he could assemble the kind of coalition needed to change the tone in Washington.

“We need to seize this momentum, attract a new generation of leaders to our party, while rallying behind the candidate who can best unite the country during these uncertain economic times,” Mr. Norcross said. “That candidate is Senator Barack Obama.”

As a prominent senator from neighboring New York, Mrs. Clinton had the backing of most of New Jersey’s Democratic establishment, and she handily won New Jersey’s primary on Feb. 5th. The week before the vote, Mr. Norcross and the county organization played host to an appearance by former President Bill Clinton, who was campaigning for his wife. Since then, however, Mr. Obama has won 10 consecutive primaries, and shaken loose the support of an assortment of prominent Democrats.

In addition to the two superdelegates, eight other South Jersey Democrats announced their endorsement of Mr. Obama on Wednesday, including Mr. Norcross’s brother, George E. Norcross III, who is a former head of the Camden County Democrats and one of the party’s most powerful political leaders.