CNN correspondent Candy Crowley attends the 34th Annual AWRT Gracie Awards Gala at The New York Marriott Marquis on June 3, 2009 in New York City. (Photo by Larry Busacca/Getty Images for AWRT)

A group of black journalists says it is disappointed in the lack of ethnic diversity among the people chosen to moderate presidential debates.

The National Association of Black Journalists said Friday that the Commission on Presidential Debates needed to stop treating black reporters as if they were unqualified, invisible or both. The group said diversity was important in a year in which as much as a quarter of the electorate is expected to be non-white.

Candy Crowley of CNN, Jim Lehrer of PBS and Bob Schieffer of CBS News were selected to moderate the three debates between President Barack Obama and Republican challenger Mitt Romney this fall. Martha Raddatz of ABC News will moderate the debate between Vice President Joe Biden and Republican candidate Paul Ryan.

A commission representative did not immediately return a call seeking comment.

Earlier this week, the president of the Spanish-speaking television network Univision criticized the lack of Latino representation among the moderators and suggested a separate forum hosted by two Univision personalities.

In response, the commission noted that a number of groups and individuals wanted to be included, but it was impossible to accommodate everyone. The commission said that the journalists selected see their assignment as representing all Americans.

Copyright 2012 The Associated Press.