Constitutional amendment (voter referendum); real property tax exemption; surviving spouses of soldiers who died in the line of duty. Provides for a referendum at the November 5, 2024, election to approve or reject an amendment to the Constitution of Virginia that would expand the real property tax exemption that is currently available to the surviving spouses of soldiers killed in action to be available to the surviving spouses of soldiers who died in the line of duty with a Line of Duty determination from the U.S. Department of Defense. This bill is identical to SB 4.