CHICAGO (AP) _ Rep. William Lipinski, a powerful 11-term Democrat from Chicago, plans to retire from Congress and support his son to replace him in November, his staff said Friday.

Lipinski planned to file papers Friday with the state Board of Elections withdrawing from the ballot, said Jerry Hurckes, Lipinski's chief of staff.

Party officials from the district will choose Lipinski's replacement during a meeting Tuesday, and the congressman will push for his son, a political science professor at the University of Tennessee, Hurckes said.

Lipinski, 66, was elected to the House in 1982, and served as a Chicago alderman from 1975 to 1983. His district includes parts of Chicago's southwest side and suburbs.