That most intensely scrutinised of federal electorates, Wentworth, is again the subject of an internal party polling leak. Many argue that all internal polls that make it to the public view are self-serving fabrications, but I personally am naive enough to think they might sometimes be authentic. This time we have The Australian reporting results from a very thorough survey of 400 voters conducted for Labor in June by UMP Research. The key finding is that Labor has a decisive lead on the primary vote, of 44 per cent to 42 per cent. The report also informs us that the Liberal Party has doubled the number of seats it was treating as ‘marginal’ in the face of Labor’s consistent lead in the polls.