Jeremy Corbyn
Of the four candidates in the run, Jeremy Corbyn is considered the most progressive on nearly every issueGetty

The Labour leadership race will conclude at midday on Thursday (10 September) when voting closes. The results for the top job in the opposition party, contested by Andy Burnham, Yvette Cooper, Jeremy Corbyn, and Liz Kendall, will be declared on 12 September.

Corbyn, who entered the race as a dark horse, has gained popularity in political circles, and is an odds-on favourite of the bookmakers. So much so, the 66-year-old member of parliament for Islington North was reportedly "urged to quit the Labour leadership race by senior member, as he was in danger of winning".

According to BBC, there are concerns that "non-party supporters" have tried to influence the outcome of the election, which it added "has been plagued by internal rows". This is the first time the Labour leader is being elected under the "one member, one vote" system and numerous people have complained of not receiving their voting papers.

Labour representatives have said that "ballots have been posted and emailed out correctly". They have also urged supporters to check their inbox for the final reminder and use the code in it to cast their ballots.

Registered Labour Party supporters had to pay £3 ($4.6) to be able to vote in the contest. The process, implemented in 2014, has been criticised with some supporters claiming that non-Labour supporters have infiltrated the voters' list. They also called for voting to be halted.