Let's look at how the LDP leadership election process works.
A total of 764 votes are up for grabs. Lawmakers get a total of 382 ballots. An equal number of votes are decided on by rank-and-file members across the country. These are allocated based on proportional representation. Rank-and-file members aged 20 or older and who paid party dues for the past two years are eligible to vote.
The number of rank-and-file members stood at more than 1.1 million. Their ballots will first be counted by the LDP's prefectural chapters. The party headquarters will calculate the vote totals, which will be decided through proportional representation.
This vote was called off in the last race that took place in September 2020, as the election was hastily arranged after then Prime Minister Abe Shinzo resigned.
Whoever receives a majority of combined votes from lawmakers and rank-and-file members, will win the party leadership.
If no one wins a majority, the winner will be decided by a runoff between the two top candidates. 429 votes in the runoff consists of 382 allotted to lawmakers and 47 given to each prefectural chapter. The candidate who receives the most votes will win the election.