By Jim Melwert

NORRISTOWN, Pa. (CBS) — The candidates running for Montgomery County District Attorney will meet in a debate Wednesday. And with no love lost between candidates Bruce Castor and Kevin Steele, expect some fireworks.

Republican Bruce Castor was district attorney from 2000-to-2008. Since then he’s been a county commissioner. He’s up against Democrat Kevin Steele, who’s been First Assistant District Attorney since 2008.

The race plunged into the gutter when Kevin Steele started running an attack ad, last week, questioning Bruce Castor’s decision – as DA at the time — to decline to file sex assault charges against Bill Cosby back in 2005.

Castor fired back asking why Steele didn’t pursue charges, as the first assistant in the DA’s office for the past 8-years. The two have been publicly exchanging blows since, with Castor even claiming Steele is behind a defamation suit that filed earlier this week by the alleged victim in the 2005 Cosby case, a charge the Steele campaign denies.

Overshadowed by Cosby, but still a hot topic, is the ongoing prosecution of attorney general Kathleen Kane.

The debate will be in Lansdale, moderated by WNPV-AM program director and show host Darryl Berger.