Breakdown of the populus polling

It seems that Labour are winning with the younger voters but they are less likely to actually come out and vote and don't number as much as the older population, so is the upturn in favour for the Conservatives down to The blues getting the blue rinse brigade out?

Populus polling Labour 36% Conservatives 35% UKIP 13% LibDems 8% Green 3% SNP 3%
— General Election (@UKELECTIONS2015) May 13, 2014

Populus Absolutely certain to vote #UKIP 75% #CONSERVATIVES 72% #LABOUR 66% #LIBDEMS 57%
— General Election (@UKELECTIONS2015) May 13, 2014

Populus Aged 65+ CONSERVATIVES 46% LABOUR 23% UKIP 18% LIBDEMS 7% SNP 3% GREENS 1% Absolutely certain to vote 75%
— General Election (@UKELECTIONS2015) May 13, 2014

Populus Aged 18-24 LABOUR 56% CONSERVATIVES 19% UKIP 9% LIBDEMS 8% SNP 4% GREENS 4% Absolutely certain to vote 31%
— General Election (@UKELECTIONS2015) May 13, 2014

http://www.populus.co.uk/wp-content/uploads/2014/05/OmOnline_Vote_12-05-2014_BPC.pdf