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Vote Delegation

In the Conway era, ADA holders can delegate their governance voting power to a Delegated Representative (DRep). This is separate from stake pool delegation — you can delegate stake to one pool and voting power to a different DRep.

Delegate to a DRep​

import { Credential, DRep, preprod, Client } from "@evolution-sdk/evolution"

const client = Client.make(preprod)
  .withBlockfrost({
    baseUrl: "https://cardano-preprod.blockfrost.io/api/v0",
    projectId: process.env.BLOCKFROST_API_KEY!
  })
  .withSeed({ mnemonic: process.env.WALLET_MNEMONIC!, accountIndex: 0 })

declare const stakeCredential: Credential.Credential
declare const drepKeyHash: any

const tx = await client
  .newTx()
  .delegateToDRep({
    stakeCredential,
    drep: DRep.fromKeyHash(drepKeyHash)
  })
  .build()

const signed = await tx.sign()
await signed.submit()

Built-in DRep Options​

Instead of delegating to a specific DRep, you can choose a built-in option:

OptionEffect
AlwaysAbstainYour voting power doesn't count toward any vote
AlwaysNoConfidenceYour power always counts as "no confidence" in the committee
import { Credential, DRep, preprod, Client } from "@evolution-sdk/evolution"

const client = Client.make(preprod)
  .withBlockfrost({
    baseUrl: "https://cardano-preprod.blockfrost.io/api/v0",
    projectId: process.env.BLOCKFROST_API_KEY!
  })
  .withSeed({ mnemonic: process.env.WALLET_MNEMONIC!, accountIndex: 0 })

declare const stakeCredential: Credential.Credential

const tx = await client
  .newTx()
  .delegateToDRep({
    stakeCredential,
    drep: DRep.alwaysAbstain()
  })
  .build()

const signed = await tx.sign()
await signed.submit()

Delegate Stake and Voting Together​

import { Credential, DRep, preprod, Client } from "@evolution-sdk/evolution"

const client = Client.make(preprod)
  .withBlockfrost({
    baseUrl: "https://cardano-preprod.blockfrost.io/api/v0",
    projectId: process.env.BLOCKFROST_API_KEY!
  })
  .withSeed({ mnemonic: process.env.WALLET_MNEMONIC!, accountIndex: 0 })

declare const stakeCredential: Credential.Credential
declare const poolKeyHash: any
declare const drepKeyHash: any

const tx = await client
  .newTx()
  .delegateToPoolAndDRep({
    stakeCredential,
    poolKeyHash,
    drep: DRep.fromKeyHash(drepKeyHash)
  })
  .build()

const signed = await tx.sign()
await signed.submit()

Register and Delegate in One Step​

import { Credential, DRep, preprod, Client } from "@evolution-sdk/evolution"

const client = Client.make(preprod)
  .withBlockfrost({
    baseUrl: "https://cardano-preprod.blockfrost.io/api/v0",
    projectId: process.env.BLOCKFROST_API_KEY!
  })
  .withSeed({ mnemonic: process.env.WALLET_MNEMONIC!, accountIndex: 0 })

declare const stakeCredential: Credential.Credential
declare const drepKeyHash: any

const tx = await client
  .newTx()
  .registerAndDelegateTo({
    stakeCredential,
    drep: DRep.fromKeyHash(drepKeyHash)
  })
  .build()

const signed = await tx.sign()
await signed.submit()

Next Steps​