Will the Labour poll boost stick?

So, today’s YouGov poll for the Sun records a 7 point post-conference boost for Labour.  The Tories are now on 41 percent (down 3 from last month); Labour on 31 percent (up 7); and the Lib Dems on 16 percent (down 4).  And there’s some good news for Brown personally, too.  39 percent of respondents want him to stay in No.10 – up 10 from last month.  

It’s not entirely unexpected.  Although I found it less than impressive, Brown’s speech did get generally good notices in the press.  And pundits are already picking up on ‘the Sarah Effect’.  The question now, though, is will the Labour gains stick?  There are three major reasons suggesting that they won’t:

1) Some of the below-headline findings are less-than-favourable for Brown.  Significantly, 60 percent of respondents think that Brown doesn’t understand what people are going through as the credit crunch takes hold.