Use Case ID UC-03 Title Cast Vote Actors Voter, System Description Voter securely casts a vote and receives a confirmation receipt. Precondition Voter is logged in and authenticated. Postcondition Vote is securely stored. Alternative Courses If the system crashes during the vote, a recovery mechanism restores progress. Frequency of Use Once per voter. Includes Secure Voting Process, Receipt Generation Priority High P a g e | 6 Backward Traceability FR-2 (Secure Voting) Forward Traceability UC-04 (Vote Tallying), UC-05 (Audit Trails)