A close primary race has divided Republicans in the late Rep. John Murtha's district and has helped Democrat Mark Critz take the lead in the special election to replace him, according to a Susquehanna Polling & Research survey.
Critz leads GOP nominee Tim Burns 44 percent to 38 percent with one week to go. Voters on Tuesday will pick between the two to fill Murtha's unexpired term and will choose their parties' nominees for the general election in November.

