A simple smart contract for implementing a decentralized voting poll on the NEAR blockchain. This contract enables a poll creator to set up a voting session with a predefined list of allowed voters and candidates. Each allowed voter can cast one vote for their chosen candidate, and the contract ensures that each voter votes only once.
- Restricted Voting: Only voters included in the allowed voters list can cast a vote.
- One Vote Per Voter: The contract tracks voters to ensure they cannot vote more than once.
- Candidate Tallying: Maintains vote counts for each candidate and allows results to be queried.
- Secure Storage: Uses unique storage prefixes to maintain data integrity on the blockchain.
The smart contract is structured with the following key components:
- poll_creator: The account that initialized the poll.
- allowed_voters: A set of account IDs that are allowed to vote.
- voted_voters: A set used to track which voters have already cast their vote.
- candidates: A map associating candidate names with their vote counts.
- Purpose: Initializes the contract with the specified list of allowed voters and candidates.
- Behavior: The account calling this function becomes the poll creator.
- Purpose: Casts a vote for the specified candidate.
- Requirements:
- The caller must be in the allowed voters list.
- The caller must not have voted already.
- The specified candidate must exist.
- Purpose: Returns the current vote counts for each candidate as a list of
(candidate, vote_count)tuples.
To deploy the contract on the NEAR blockchain:
-
Build the Contract:
cargo build --target wasm32-unknown-unknown --release
-
Deploy Using NEAR CLI:
near deploy --wasmFile target/wasm32-unknown-unknown/release/your_contract.wasm --accountId your_account.testnet
This project is licensed under the MIT License.
Contributions are welcome! Please open an issue or submit a pull request if you have any suggestions or improvements.