What are you so scared of, Dave?   
the Prime Minister or his office  is trying to choose who should be making the case against him.
David Cameron refused to go head-to-head with Boris Johnson over Brexit
Mr Johnson vowed to debate with ‘anybody’ as he promotes leaving EU 
PM only agreed to appear on an EU debate programme with Nigel Farage
Tory MP Jacob Rees-Mogg added: ‘The Prime Minister is 
“frit”. Boris is a classically trained debater. The Prime Minister is highly competitive and hates losing. He should screw his courage to the sticking place, take on Boris.’ 
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