Prime Minister Joseph Chamberlain?

With a POD no earlier than the Liberal split, how can we have Joseph Chamberlain Prime Minister of Britain? What would his premiership look like?

Perhaps Chamberlain becomes leader of the Conservatives/Unionists after the 1906 defeat? He might be able to defeat the Liberals in 1910, although butterflies might completely change that situation. 1906 could be too late though.
 
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