Following my post yesterday about polls, a reader (Robin Johnson's Economics Web Page) sent me a link to the below chart from Wikipedia. It plots the main opinion poll results since the 2008 election, and it shows clearly that the gap between National and Labour is not closing.
(Author Mark Payne)
Now I don't want to get involved in a tedious debate about statistics. But this does suggest that some people are clinging more to hope than facts when they say the gap between the main parties is closing.
Of course, things could change, and the gap could close. But why should we expect a closing of a gap that has stayed wide for the last two years, unless the main parties start doing things differently? What has Labour done to justify the gap being closed?