NEW YORK (AP) -- In an effort to break the Democratic Party's grip on the black vote, several leading black Republicans have accepted an offer from one of the nation's largest urban radio networks to deliver a weekly address targeting African Americans. Alphonso Jackson, whom President Bush chose to be secretary of the Department of Housing and Urban Development, will present the first address on Saturday at 1:06 p.m., said Jerry Lopes, president of program operations and affiliations at Pittsburgh-based American Urban Radio Networks. "We welcome the opportunity to speak directly to the African American community throughout our nation," Ed...