The newly elected Scottish Labour leader has said the long and increasingly petty campaign to replace Ed Miliband is letting David Cameron off the hook.
Kezia Dugdale, who was elected yesterday, said she was concerned that the party leadership contest south of the border would hinder its ability to be an effective opposition in the meantime.
The thing that bothers me about that is not so much the petty exchanges, but the fact that David Cameron is getting off the hook all through the summer.
I think he's having three summer holidays, and he can do so in the blissful knowledge that the Labour Party will continue to talk about its own future rather than scrutinise his government's record and what they plan to do in the future. That's quite worrying.
Dugdale also questioned Jeremy Corbyn's willingness to be prime minister, but acknowledged that his popularity and "big ideas" are exciting the country.
Earlier this month, she had questioned how "a guy that's broken the whip 500 times" can enforce party discipline, in an interview with The Guardian.
Former PM avoided naming any Labour leadership candidates in his speech, but appeared to make a veiled warning against electing Corbyn.
A poll rates Jeremy Corbyn as the leadership candidate both most likely to improve Labour's fortunes and damage the party's chances.