Explanation:

- Option 1: election count

- This refers to the process of counting votes during an election.

- It is not related to listing voters.

- Option 2: voter's list

- This is a list of people who are registered and eligible to vote in elections.

- It is the official record of individuals allowed to participate in voting.

- Correct Answer

- Option 3: election list

- This could refer to any list related to elections, such as candidates, but not specifically the electoral roll.

- It lacks specificity compared to "voter's list."

- Option 4: serial list

- This term does not have a known connection to voting or electoral processes.

- It's not commonly used to describe an electoral roll.