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BlockVote: Secure Blockchain-Based Voting Application

Technologies Used

Introduction

Project Description

The application lets any user create campaigns, whoever creates the Campaign will be the Campaign's owner, and only he can modify the Campaign. Each Campaign will have candidates. The Campaign owner can only add candidates.

In order to use the application, the user must install Metamask as a Blockchain wallet and connect to the respective network. Users with voting rights can vote.

Moreover, the Campaign owner can make the Campaign Inactive. Everyone can see the votes and the Winner and Download the Results in PDF format. Each Campaign and candidate in the Campaign will have a unique blockchain address so It can be transparent, and all the vote transactions can be seen in transaction history and Etherscan. Users can always go to the help screen to understand the rules and see FAQs for better usability.

The application is also accessible for visually impaired users using a voiceover when hovered over the screen. The application also supports multiple languages with a single click of a button.

Technical Details

Used Truffle to deploy smart contracts to Ganache and Sepolia Ethereum Network
Used Angular 11 and NX Workspace for front-end development
ng-web3 library to connect to Metamask and make blockchain transactions
Used Google's Material Design Standard Components
Used Multiple Solidity contracts and inheritance features to develop robust smart contracts
Used Dexie for Minimalist IndexedDB to store eligible voters
Used JsPDF Library to generate PDF files

Instructions to run the project

Clone the repository
Run npm install in the root directory
Run npm run truffle:develop to start the local blockchain
Run npm run truffle:migrate to deploy the smart contracts to the local blockchain
Modify the truffle-config.js file to point to the local blockchain
Copy the contract addresses from the terminal and paste them in the file environment..campaignFactory.address
Run npm run start to start the frontend application
Navigate to http://localhost:4200/ to view the application

Project Features

Create Campaign
Adding Candidates to Campaign
Voting for Candidates
Smart Contracts for Campaign operations and voting operations
Ability to make a Campaign InActive after Voting is done, so that no more votes can be cast
Security, cannot access any campaigns without logging in
ID verification and ability to add eligible voters ( Voter ID and Social Security)
Ability to Download Voting Results as PDF file
UI Improvements, Card Designs, Colors, Buttons, Animation, Icons, Images etc
Multiple Language Support
Improve accessibility for visually impaired users
Upcoming Elections Headers
Help Screen with Instructions and FAQs for Voters
Share Campaign on Any Social Media Platform with a single click
Deployed to Sepolia Testnet and Ganache