These elections were conducted using the Single Transferable Vote (STV) method. Voters marked their ballot papers with preferences, with 1 being their first preference, 2 being their second preference and so on.
If no candidate receives more than 50 per cent of the vote in the first round, the candidate with the fewest votes is eliminated and their second preferences are redistributed. This continues until one candidate has more than 50 per cent of the remaining valid votes.
Eligible Labour Party members, affiliated supporters, and registered supporters were eligible to take part in the ballot that ran from Monday 24 February to Thursday 2 April.
Election of the Leader of the Labour Party
| Total voters | Total votes returned | Total spoilt ballots | |
| Members | 552,835 | 401,564 (72.64%) | 43 |
| Registered Supporters | 13,626 | 13,006 (95.45%) | 0 |
| Affiliated Supporters | 217,690 | 76,161 (34.99%) | 93 |
| Total | 784,151 | 490,731 (62.58%) | 136 |
Round 1
| Total | |
| LONG-BAILEY | 135,218 (27.6%) |
| NANDY | 79,597 (16.2%) |
| STARMER | 275,780 (56.2%) [ELECTED] |
Keir Starmer has received more than 50 per cent of valid votes cast and is therefore elected.
Round 1 results by section were as follows:
| Section | LONG-BAILEY | NANDY | STARMER | Total |
| Affiliates | 16,970 (22.31%) | 18,681 (24.56%) | 40,417 (53.13%) | 76,068 |
| Members | 117,598 (29.29%) | 58,788 (14.64%) | 225,135 (56.07%) | 401,521 |
| Registered Supporters | 650 (5.00%) | 2,128 (16.36%) | 10,228 (78.64%) | 13,006 |
https://labour.org.uk/people/leadership-elections-hub-2020/leadership-elections-2020-results/
