Very close between the Cons and Lab, and one should also bear in mind that the UK polls are often quite inaccurate. That's partly due to the "first-past-the-post" system, but there must be other reasons why the polls often miss out.
Anyway, people close to the Conservatives (but not part of the party machinery) appear hopeful and even predict a working majority for Cameron, despite the fact that most of the polls predict a hung parliament or a Labour, SNP majority.
We'll soon see how it turns out
Its going to be very very close and very interesting. I think the pundits are going to be very surprised. They are already finding it very hard to predict the results, partly because local and regional issues are going to be much more important. Tactical voting is going to be a significant factor too.