Comcast Corp., Time Warner Cable Inc., Cox Communications Inc. and Bright House Networks will start running four public service announcements starting Saturday and leading up to the 2008 primary elections.

The spots will feature several celebrities, including Ana Ortiz of "Ugly Betty," Lou Diamond Phillips of "La Bamba," Malcolm-Jamal Warner, best known for his role as Bill Cosby's son in "The Cosby Show," and comedian Margaret Cho.

The $5 million campaign also includes a Web site, http://www.ourtimetovote.com, and a voters' hot line, 1-866-544-VOTE.

The Comcast Foundation also awarded grants to Asian Pacific Islander American Vote, the Hispanic Federation, the League of United Latin American Citizens, the NAACP National Voter Fund, and the National Association of Latino Elected and Appointed Officials Educational Fund.