WBUR.org 12/12/11: Conroy To Withdraw From Mass. U.S. Senate Race | WBUR. The list of Democrats vying to challenge Republican U.S. Sen. Scott Brown is thinning. State Rep. Tom Conroy has scheduled a news conference for Monday, when he is expected to announce that he is withdrawing his candidacy.

Conroy, of Wayland, said he can’t compete with Harvard law professor and fellow Democratic candidate Elizabeth Warren’s name recognition, financial resources and ability to energize thousands of volunteers.