user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Results' regarding '1943 Christchurch East by-election'
Table Content:
| Party | Party | Candidate | Votes | % | ± |
| --- | --- | --- | --- | --- | --- |
| - | Labour | Mabel Howard | 4,559 | 47.27 | 28.47 |
| - | Democratic Labour | Horace Herring | 2,578 | 26.73 | - |
| - | National | Melville Lyons | 2,371 | 24.59 | +0.33 |
| - | Independent | Lincoln Efford | 114 | 1.18 | - |
| - | Independent | Owen McKee | 22 | 0.23 | - |
| Majority | Majority | Majority | 1,981 | 20.54 | 30.95 |
| Registered electors | Registered electors | Registered electors | 14,835 | - | - |
| Turnout | Turnout | Turnout | 9,644 | 65.01 | 26.42 |


Question
How many people among all on the electoral roll vote for the 1943 by-election?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["There were 14,835 people on the electoral roll, of which 9,644 voted in the 1943 by-election."]