I note that there is no mention of the AV referendum on 5th May here on the forums.

Currently I know that Sinn Fein & SDLPare urging Yes2AV
http://www.yestofairervotes.org/
http://www.yes2av.org.uk/

Whilst the DUP are urging No2AV
http://www.no2av.org/

The third view which I tend to agree with is:-
http://www.no2av-yes2pr.org/

Yes 2 AV TV broadcast:-
http://youtu.be/ShE847wJpDo
http://www.youtube.com/watch?v=Jm5IBhrq_PU
Labour Yes 2 AV http://www.youtube.com/watch?v=WmtAzrVmQ_8

No 2 AV broadcast
http://youtu.be/-obZ9OG_XKA
from the Labour Party http://www.youtube.com/watch?v=zcIJSndwSr4