(CBS/AP) BOSTON - Joseph Kennedy III, the first of his famous political family's generation to seek elective office, has defeated two little-known Democrats in his congressional primary in Massachusetts.
The 31-year-old Kennedy will face the winner of Thursday's GOP primary in the November election for the seat held by longtime liberal Democratic Rep. Barney Frank. He's retiring.
Kennedy is the son of Joseph P. Kennedy II, who represented the state's 8th Congressional District for six terms from 1987-1999, and the grandson of the late Robert F. Kennedy.
Thursday's victor is a graduate of Stanford University and Harvard Law School. He served in the Peace Corps, worked as a prosecutor in Massachusetts and in 2006 co-managed with his twin brother, Matt, the final campaign of their great-uncle, Sen. Edward Kennedy, who died of cancer in 2009.
Kennedy spoke at the convention on its opening night Tuesday and introduced a seven-minute video honoring the late Sen. Edward Kennedy, who died in 2009.
"Make no mistake, he is here with us this evening," the young Kennedy said of the senator. "I see him in the passion of our delegates, the character of our candidates and the causes that unite us."
The video also illustrated how Mr. Obama has carried on the liberal legacy that Kennedy entrusted to him by passing on the fight for national health care reform. Kennedy is shown at the 2008 Democratic convention saying, "I know what America can achieve. I've seen it, I've lived it, and with Barack Obama, we can do it again."