The candidates in the Massachusetts Senate race are hoping to seize the momentum for their campaigns coming off their first head-to-head debate.

Republican U.S. Sen. Scott Brown returned to the offensive on Friday, criticizing Democratic challenger Elizabeth Warren's role in a case involving victims of asbestos poisoning. Brown charges that the Harvard Law School professor was paid nearly $250,000 by Travelers Insurance to help get the company ``off the hook'' for hefty asbestos settlements.

Brown has raised the issue before, including during Thursday's debate.

Warren said she served as a consultant in the case involving a mining company and defended the use of trust funds to ensure that all victims of asbestos poisoning were paid.

Warren was expected to receive the endorsement of Democratic Boston Mayor Thomas Menino at a rally later Friday.

[Via AP]