From the BBC (before they realised the turnout was so high):
Could the former shadow home secretary actually get more votes than he did in the 2005 general election? Impossible say the experts. If he does get more than 22,792 votes it will not only be a massive vindication of his campaign against 42 day detention of terror suspects, it will also confirm him as a major player at Westminster once again and ensure civil liberties is a major issue at the next general election. It will also leave a few Westminster pundits with large amounts of egg on their faces - surely reason enough to tune into the election coverage later, just on the off chance...UPDATE 0245: Turn out was 35% and David Davis was the clear winner with 17119 votes. I think that can be taken to be a good result.