John Sweeney

AFL-CIO President John Sweeney, the Maryland superdelegate who waited until mid-June to endorse Democratic presidential nominee Barack Obama, is attending a meeting of the candidate's prominent economic advisors in Chicago today.

Obama and Sweeney: In Chicago last weekOverlooked since last month has been the story of the remaining Democratic superdelegates, as it was assumed they would all fall in line for Barack Obama -- an assumption that was correct.

After the superdelgate bonanza of June 3 to 4, two remained in the Maryland undeclared column: AFL-CIO president John Sweeney and Democratic National Committee Vice Chair Susan Turnbull.

In a statement this morning, Rep. Chris Van Hollen (D-Kensington) endorsed Sen. Barack Obama (D-Ill.) for president.

Van Hollen praised the long nominating season for helping to "energize" the Democratic Party.

"This record enthusiasm has already helped to grow our Majority in Congress through three straight special election wins," the chairman of the Democratic Congressional Campaign Committee said. "The enthusiasm, new voters, and Americans' demand for change has clearly expanded the playing field for House Democrats this fall. Our nominee Barack Obama is inspiring millions of Americans to register to vote and go to the polls."

He also congratulated Sen. Hillary Clinton (D-NY) on her campaign.

Obama leads in Maryland superdelegates with 14, followed by Clinton's 11. Rep. Steny Hoyer, Sen. Ben Cardin, DNC Vice Chair Susan Turnbull and AFL-CIO President John Sweeney remain undeclared.