"From Worse to Worse/Worst"

Posted by Steve O'Rourke on October 19, 2001

Which is it? We see in popular media the phrase as "if things go from worse to worse" but that seems logically incorrect. It must be "from worse to worst". That would also parallel the construction "when things go from bad to worse". I'm looking for both authpority on this point but also credible origin. If Shakespeare wrote "worse to worse" then I'm stuck!