I know the feeling. We've had Conservative & Lib Dems literature, but the Labour Party have given up 'round my way. They don't even bother with the doorstep handshakes anymore. The Conservatives don't bother, either because the seat's as good as theirs. Meanwhile the Lib Dems operate on such a shoestring budget they cannot focus on anything other than the marginals.
To be fair to both Labour & Conservative, it's difficult to see why they would even attempt to conduct an election campaign in any other way, given the present system.