Stephen Hess, a senior fellow emeritus at the Brookings Institution, ranks America’s top political dynasties.

Who better to understand the emotional needs of a congressman than a congresswoman? Or vice versa.

“Til death do us part” is not an oath that applies to congressional seats.

The death of Sen. Edward M. Kennedy last week has rekindled discussion of political dynasties.

Current members of the House and Senate whose family members have served in Congress

Members of Congress whose siblings or siblings-in-law have also served

Members of Congress whose cousins have also served

Members of Congress with various degrees of grand and great - grandparents, grandchildren, grand aunts and grand uncles

Members of Congress whose nieces, nephews or uncles have also served

Members of Congress whose parents or children who also served

Members of Congress whose spouses have also served