Is it possible for Winston Churchill to takes power before 1940? If yes, how far would the POD need to go? Would it need to go back as far as 1919-1929 or could we just have Chamberlain suffer an unfortunate accident involving stairs and a banana skin soon after the start of WW2?
Churchill coming to power between September 1st 1939 and January 1st 1940 are good but the earlier, the better!
Of course, scenario/ideas on how he may come to power before the start of WW2 are welcome too.