The data flow diagram for an e-voting system shows how voters, the election commission, and candidates interact. Voters register to vote, cast their votes, and receive confirmation. The election commission manages results, approves registrations, and generates reports. The system maintains voter databases and ensures security. Candidates submit nominations and receive results. This DFD shows why a secure and clear voting process is important. It makes sure all votes are recorded and counted correctly. It shows how technology modernizes voting and boosts democratic participation.