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Oh-eight (D)

We must sound like a broken record, but for the second-consecutive day -- and the third time in the last five days -- a herd of Democratic presidential candidates steps in front of a key labor group. This time, it's this morning's Building and Construction Trades Department's annual legislative conference in DC. The speaking order is: Edwards, Richardson, Clinton, Kucinich, Dodd, Biden, and Obama. (The GOP presidential candidates were also invited. But the only one who accepted, Hagel, later declined due to a schedule conflict.)

On Tuesday, Clinton, Edwards, and Obama addressed the Communication Workers of America. And last Saturday all of them, save Biden, participated in a health-care forum that the powerful Service Employees International Union. Now liberal MoveOn is the latest to announce a Democratic presidential forum, this one a "virtual town hall" on Iraq to be held April 10.

By comparison, the Republican field so far has had less exposure to GOP-leaning interest groups. And when these candidates actually do meet with these groups, it's sometimes closed to the press -- like the conservative Club for Growth conference that begins on Thursday, featuring visits by Romney, Giuliani, Brownback, Gingrich, and Giuliani. (McCain and Huckabee, whom the Club has criticized, won't be attending.)

Remember that "South Park" parodies Clinton tonight. She'll get a warmer reception when she receives the endorsement from the National Organization for Women's PAC this afternoon in DC. While this endorsement shouldn't seem too surprising, do note that women's organizations seem to be uniting around Clinton's candidacy faster than African-American politicians are for Obama.

The Clinton-is-too-polarizing whispers inside the Democratic party might be a little louder thanks to this Harris poll claiming half of those surveyed nationally wouldn't vote for her.

No endorsement seems to be free these days. Apparently, per the AP, Clinton promised to help Tom Vilsack -- who endorsed her earlier in the week -- with his presidential campaign debt, which the AP pegs at $400,000.

Speaking of endorsements coming for a price, Bill Shaheen, the husband of ex-New Hampshire Gov. Jeanne Shaheen (D), is denying allegations in an AP story that his endorsement of Clinton was tied to a promise to become an envoy (or some sort of "ambassador") in Middle East negotiations.

The Los Angeles Times' Barabak covered Edwards' event in San Francisco on Monday and remarks: "Perhaps most important, the sudden spotlight, even if shaded with a tinge of morbid curiosity, represents a chance for Edwards to pitch himself in a way that was impossible a week ago. Witness the scene Monday in San Francisco, a press turnout that would have been unthinkable if all he had to talk about were carbon dioxide emissions."

Earlier this morning, Bill Richardson discussed his strategy for handling the threat of nuclear terrorism at the Nitze School of Advanced International Studies at Johns Hopkins University in DC.

While Clinton picks up NOW's endorsement today, Obama nabbed the support of one of the co-founders of BET, Sheila Johnson. She's the ex-wife of Robert Johnson, who has endorsed Clinton.