IL HB5264

Expands evidence admissibility in domestic violence prosecutions to include first degree murder and second degree murder cases where the offense involves domestic violence.

Allows evidence of the defendant's prior domestic violence offenses to be admitted and considered for any relevant purpose in qualifying criminal cases.

Requires courts to weigh the probative value of such evidence against potential prejudice to the defendant, considering temporal proximity, factual similarity, and other relevant circumstances.

Mandates prosecutors disclose prior domestic violence evidence to the defense at a reasonable time before trial, unless the court excuses pretrial notice for good cause.

Permits proof of prior conduct through specific instances, reputation testimony, or expert opinion, with prosecution reputation testimony only allowed after the defense has offered such testimony.