Does Labour have a "ED-ache" ?

In every section of the poll Cameron manages to reverse opinion on party or person, the most extreme being in Scotland where Conservatives are 24% behind Labour yet Cameron is just 1% behind Miliband. They talked about it yesterday on the Daily Politics, but does Labour seriously have to talk about ED? Will he be the one thing which loses them the next election?

YOUGOV Polling Who would make the best PM? David Cameron 36% +1 Ed Miliband 19% -2 Nick Clegg 5% +1 Don't Know 40%
— General Election (@UKELECTIONS2015) May 15, 2014

Yougov Poll N.England voting intentions LAB 42% CON 30% UKIP 14% LD 9% Who would be best PM? Cameron 34% Miliband 21% Clegg 4% DK 41%
— General Election (@UKELECTIONS2015) May 15, 2014

Yougov Poll London voting intention LAB 41% CON 34% LD 10% GRN 8% UKIP 6% Who would make best PM? Cameron 34% Miliband 20% Clegg 6% DK 39
— General Election (@UKELECTIONS2015) May 15, 2014

Yougov S.England voting intention CON 35% LAB 25% UKIP 16% LD 16% Who would make best PM? Cameron 40% Miliband 15% Clegg 5% DK 40%
— General Election (@UKELECTIONS2015) May 15, 2014

Yougov Midlands/Wales voting intention CON 37% LAB 37% UKIP 13% LD 6% Who would make the best PM? Cameron 38% Miliband 22% Clegg 3% DK 37
— General Election (@UKELECTIONS2015) May 15, 2014

Yougov Scottish voting intention LAB 38% SNP 31% CON 14% LD 9% Who would make the best PM? Miliband 23% Cameron 22% Clegg 4% DK 52%
— General Election (@UKELECTIONS2015) May 15, 2014

http://cdn.yougov.com/cumulus_uploads/document/drt1d0irmj/YG-Archive-Pol-Sun-results-140514.pdf