"Time and time again, when the floor of the United States Senate is crowded with those who want to destroy the environment...it is Ted Kennedy who comes to the floor to fight the good fight," Kerry said.

Kerry thanked the crowd of supporters for making history with their votes, returning Kennedy to Washington for his 39th year in office.

"You have sent Kennedy back to the Senate for the longest tour of duty in Massachusetts history," he said.

Following a parade of Kennedy's nieces, nephews, children and grandchildren, as well as his sister Patricia Kennedy, his son, Teddy Jr., introduced the 68 year-old senator as the song "You're Still the One" came over the loudspeakers.

After thanking his supporters, Kennedy delivered a traditional stump speech, touching on the progressive themes that have made him a favorite in his home state.

"I will fight for the working families of the middle class," Kennedy said. "I want to return to the Senate because we have a lot to do to protect the environment, defend civil rights...[and] raise the minimum wage."

Kennedy said maintaining a growing economy will be his first priority, but also said he would fight to pass campaign finance reform, a patients' bill of rights and a prescription drug plan.

The party brought together a broad coalition of Kennedy supporters. Campaign workers mingled with college students and local residents.