Two new senators were sworn in yesterday in Trenton. Colin Bell (D-2), a former Atlantic County freeholder and prosecutor, succeeds Jim Whelan, who died in August. Kristin Corrado (R-40), takes over from Kevin O’Toole, who recently left the Senate to become chairman of the Port Authority. Corrado, an attorney, is the clerk of Passaic County. Both new legislators are running in November’s election.