simply reducing a margin

hi,

i’m having a very hard time making the gap between two things on my sidebar smaller.

the code show’s nothing i can see that is causing the problem.

the sidebar is http://www.rapnews.co.uk and the gap is between the poll and the ‘headnod top 5 hits’ list.

i’d like the gap between every block of different content in my side bar to be the same. this gap i mentioned is larger than the others.

thanks.