Well, they lost the Florida recount and they lost the 2011 Wisconsin Supreme Court race recount.
They didn’t lose the 2008 Franken recount. Actually they just kept recounting and looking for ‘missing’ ballots until they won.
http://www.usnews.com/opinion/blogs/peter-roff/2010/07/20/al-franken-may-have-won-his-senate-seat-through-voter-fraud