During my period of gardening leave last year I stumbled across a video interview of Rod Liddle ( might have been triggernometry or New Culture Forum ) where he mentioned that the SDP had become his new political home. I was also pretty surprised that they were still going and when I looked into their manifesto I was very pleasantly surprised.
Like all parties, there will be stuff you agree with, and stuff you don't, but they really seem to be targeting the areas which mainstream parties are too cowardly to take a stand on.
I was hoping to vote for them in December, but no candidate in my area. Maybe a hope for the future !