On Saturday, with midterm elections approaching, NewsHour Weekend travels to Louisiana where the race for the U.S. Senate closely mirrors contests from battleground states across the country. At least three dozen members of Congress have had family members who've held political office before them. Numerous incumbents today see their political futures in jeopardy, in large part because of the president's unpopularity. NewsHour's Jeff Greenfield explores the family business of American politics and how having a popular name helps candidates today. That, and the weekend's news, online and on-air.