updated 7:30 p.m. ET Nov. 7, 2008

President-elect Obama is weighing an array of Washington insiders and outsiders, including some Republicans, for top administration posts, according to Democratic officials.

Obama has signaled that he will make no Cabinet-level appointments immediately, and his deliberations are tightly held by his closest aides. But that hasn't stopped Democrats and interest groups from circulating lists and offering recommendations to the Obama transition team.

Some are surprising, such as former Bush Secretary of State Colin Powell as possible education secretary. Others are high-profile governors or members of Congress. Yet many are also little known to the general public — and may remain so.

Obama has less than 11 weeks to staff his new administration. Some names often mentioned as possible appointees to top posts:

DEFENSE SECRETARY

Defense Secretary Robert Gates.

Former Navy Secretary Richard Danzig.

Sen. Chuck Hagel, R-Neb., critic of Iraq war, retiring from Senate.

Sen. Jack Reed, D-R.I., member of Senate Armed Services Committee.

TREASURY SECRETARY

Timothy Geithner, president of Federal Reserve Bank of New York.

Former Federal Reserve Chairman Paul Volcker.

Lawrence Summers, former treasury secretary and one-time Harvard University president.

SECRETARY OF STATE

Gov. Bill Richardson, D-N.M., former U.N. ambassador and energy secretary.

Sen. John Kerry, D-Mass., 2004 presidential nominee.

Sen. Richard Lugar, R-Ind., former chairman of Senate Foreign Relations Committee.

Sen. Chuck Hagel, R-Neb., critic of Iraq war, retiring from Senate.

Richard Holbrooke, former U.S. ambassador to the United Nations.

ATTORNEY GENERAL

Eric Holder, former deputy attorney general.

Arizona Gov. Janet Napolitano.

Rep. Artur Davis, D-Ala., member of House Judiciary Committee.

Massachusetts Gov. Deval Patrick, former assistant U.S. attorney for civil rights.

ENERGY SECRETARY

Former Rep. Philip Sharp, D-Ind., president of Resources for the Future think tank.

Kansas Gov. Kathleen Sebelius.

EPA ADMINISTRATOR

Lisa P. Jackson, commissioner of New Jersey Department of Environmental Protection.

Mary Nichols, head of California Air Resources Board.

Kathleeen McGinty, former secretary of Pennsylvania Department of Environmental Protection.

HEALTH AND HUMAN SERVICES SECRETARY

Former Senate Majority Leader Tom Daschle, D-S.D.

Howard Dean, chairman of Democratic National Committee, physician, former Vermont governor.

Kansas Gov. Kathleen Sebelius.

TRANSPORTATION SECRETARY

Jane Garvey, former head of Federal Aviation Administration.

Rep. James Oberstar, D-Minn., chairman of House transportation committee.

Rep. Earl Blumenauer, D-Ore.

Mortimer Downey, former deputy transportation secretary.

INTERIOR SECRETARY

Former Oregon Gov. John Kitzhaber.

Former Alaska Gov. Tony Knowles.

Sen. Ken Salazar, D-Colo., former executive director of Colorado Natural Resources Department.

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