There are more than a dozen different developers and/or companies involved in bidding for the Portal site. All of them have bid on other downtown government-owned sites in the past.

What follows is a list of the Portal bidding partners and their past bidding alliances:

* James Hudson, Willie Leftwich and Chester Davenport, are partners in the Portal bidding with the Rockefeller Center Development Corp., businessman Ozzie Clay, attorneys Keith Seay and Ronald Jessamy, developers James E. Farr and Charles Jewett, and the Southwest Tenants Council.

Their past bidding partnerships include: for Capital Gallery (at Sixth Street and Maryland Avenue SW)--Boston-based developer Mortimer B. Zuckerman; for Metro Center (the three blocks along G Street between 11th and 13th streets)--Bethesda developer Nathan Landow; for the Sumner School (on M Street NW between 16th and 17th streets)--Zuckerman, Seay, Jessamy and the Metropolitan A.M.E. Church.

* Developer Melvin Lenkin is a partner in the Portal bidding with fellow developer Theodore R. Lerner, Channel Inn owner Manuel Fernandez, James and Cilla Adkins, owners of the O Street market, architect Vlastimil Koubek, mortgage bankers Mallory Walker and Dunlop, lawyers William Harris and S. Lee Narrow, architect Louis Fry Jr., businesswoman Flaxie Pinkett and the Volpe Construction Co.

His past bidding partnerships include: for Gallery Place (at Seventh and G streets NW)--15 members of the board of directors of the city's black-owned financial institutions, mortgage banker Walker and architect Koubek; for McPherson Square (at 14th and I streets NW)--Lenkin's wife, Thelma, and his daughter Judy, Braedon Real Estate Co. officials James and Cynthia Eichberg, J. Fernando Barrueta and Raymond Brophy, Channel Inn's Fernandez, architect Arthur Cotton Moore, Stephen Leubecker (a Lenkin employe), builder and consultant Larry Goodwin, businessman Louis Murray, and L&B Investments 5, an investment partnership for the law firm of Linowes & Blocher.

* Western Development Co. is a partner in the Portal bidding with the Eastcoast Development Corp., which is composed of the Anacostia Economic Development Corp., the Harlem Commonwealth Council and the East Los Angeles Community Union, consultants Marie Barksdale and John Clyburn, real estate broker Carlton Jones, Senate aide Carolyn Jordan, lawyer Davild Wilmot and C&P executive Delano Lewis.

Its past bidding partnerships include: for Metro Center--the D.C. Development Corp. (a city-funded private corporation), the D.C. Chamber of Commerce, and the National Center for Community Development; for Gallery Place--lawyers Ruby B. McZier, Leonard L. McCants and Larry C. Williams.

* Conrad Cafritz is a partner in the Portal bidding with construction company owner Roger Blount, civil engineers Delon Hampton and Associates, Urban Service Systems (a trash collection company), Unified Services, Inc., (a janitorial firm), and the Cultural Alliance (a coalition of Washington area arts groups).

His past bidding partnerships include: for Sumner School--architects Moore and Devrouax and Purnell, lawyers R. Robert Linowes, Joseph P. Blocker and James Dyke, businesswoman Pinkett, businessmen Albert Nellums and consultant Roy Littlejohn.

* Winn Development is a partner in the Portal bidding with parking magnate Dominic Antonelli Jr., lawyers Samuel Jackson, Dorsey Evans, Clinton Chapman and his political activist wife, Charlotte; architect Charles Bryant, businesswoman Carmen Quander and the Southwest-Southeast Economic Development Corp., a coalition of Southwest and Southeast residents.

It has also been a bidding partner with Littlejohn on the McPherson Square project.

* Samuel Jackson is a partner in the Portal bidding with Winn Development, Antonelli and others. He has also been a bidding partner on Gallery Place with Lenkin and others.

* Architect Charles Bryant is a partner in the Portal bidding with Winn Development and Antonelli and others.

His past bidding partnerships include: for Gallery Place--Lenkin and others; for Sumner School--Donohoe Construction Co., Joy Williams, a designer of dining and entertainment complexes, and the Frontier International Service Club.

* Architect Vlastimil Koubek is a partner in the Portal bidding with Lerner, Lenkin and others. His past bidding partnerships include, for Gallery Place, the directors of the black-owned financial institutions in the District and Lenkin.

* Channel Inn owner Manuel Fernandez is a partner in the Portal bidding with Lerner, Lenkin and others.

His past bidding partnerships include: for Metro Center--Developers Donald A. Brown, Joseph B. Gildenhorn and Benjamin R. Jacobs (who have since formed JBG Associates), and businessman Willey Powell; for McPherson Square--Lenkin and others.

* Political activist Charlotte Chapman is a partner in the Portal bidding with the Winn Development group.

Her past bidding partnerships include, for the Sumner School, the Milton Co., Lisle C. Carter Jr. (president of the University of the District of Columbia), IBM executive Kent Cushenberry, consultant Goodwin, Robert L. Johnson (president of Black Entertainment Television), businesswoman Brenda Strong Nixon and Thornell K. Page (an official at UDC).

* Flaxie Pinkett, president of the John R. Pinkett Real Estate Co., is a partner in the Portal bidding with developer Lenkin and others.

Her past bidding partnerships include, for Gallery Place, New York real estate magnate William Zeckendorf, lawyers Justin Colin and L. Robert Lieb, consultants Walker A. Williams and Sheldon S. Wilson, businessmen Jack G. Gloster and Vernon R. Coleman, William Seeve (of the George Hyman Construction Co.), and Garfinckel's executive Joseph Carter.

* Consultant Roy Littlejohn is a partner in the Portal bidding with Winn Development, Antonelli and others.

His past bidding partnerships include: for the Sumner School--Cafritz and others; and for McPherson Square--Winn Development Co.

* C&P Executive Delano Lewis is a partner in the Portal bidding with Western Development Co. His past bidding partnerships include, for Gallery Place, Lenkin and others.