Thousands of Labour Party members are being denied a vote in the leadership election in what is viewed by some as a blatant attempt to stop Jeremy Corbyn from winning again.
Mr Corbyn questioned the "fairness" of the vetting process, while John McDonnell branded member selection a "rigged purge".
Here are seven of the most bizarre reasons given.
Ballot papers are being sent to hundreds of thousands of party members. The result of the contest between Mr Corbyn and Owen Smith will be announced on September 24.