The Clean-Up.

Miriam, daughter of wealthy politician John Barker is engaged to reporter George Prescott. Prescott is assigned to expose gambling conditions and discovers Barker is a grafter. Miriam doesn’t believe Prescott and breaks the engagement only to fall victim to gambling fever. When she is arrested in a raid on a gaming house her father sees the error of his ways and becomes a reform candidate of the "Clean-up" party. He wins and George and Miriam reunite.