If you really want to read this, try using The Internet Archive.
http://www.thesun.co.uk/sol/homepage/news/2660991/The-Sun-newspaper-withdraws-its-support-for-Labour-government.html
http://conservativehome.blogs.com/thetorydiary/2009/09/the-sun-officially-deserts-the-labour-party-to-back-the-conservatives.html
Ok, so they're owned by Murdoch, so it shouldn't be surprising, but they've been Labour since 1997.