"I express congratulations to Senator Kennedy for sponsoring the proposal which takes this core across the nation," Gore said.
Despite many Democratic candidates' refusals to campaign with Gore or Clinton, Kennedy said he welcomes the support from the national leadership.
"We've been getting a very good response," Kennedy said after the event. "I want to return because I believe I can be effective."
The Gore visit marked the fourth time since September that a high-level figure from the Clinton administration has campaigned for Kennedy.
In September, President Bill Clinton and Hillary Rodham Clinton hosted separate fundraisers for Kennedy in Virginia and Massachusetts.
And last week, Clinton returned to stump for Kennedy in Framingham.
Kennedy said he plans to "focus like a laser beam" on the issues in preparation for tomorrow night's debate against Romney.