Those following the arguments around how and when the next US presidential debate will take place were subjected to further whiplash on Friday, when news broke that organisers had decided to cancel the upcoming head-to-head altogether.“It is now apparent there will be no debate on October 15,” the Commission on Presidential Debates (CPD) said in a statement: “The CPD will turn its attention to preparations for the final presidential debate scheduled for October 22.”The decision to cancel the…