My MPs reasons for supporting Mr Johnson (quoted verbatim) after I urged her to vote for someone who can do detail (not the exact words). I don't agree with this response at all, but this may answer the OP.
Many thanks for your email about the leadership of the Conservative Party. It is very good of you to get in touch and let me have your views.
Throughout this process I have been conscious that having a vote on who will be the next Prime Minister is a serious responsibility. I reflected carefully on how to cast my vote, taking on board the input I have received from constituents.
I held a series of meetings with candidates to discuss the programme they would pursue if they were to become Prime Minister. Brexit has been an important part of that conversation, but I questioned the contenders on a range of other important matters for my constituency. For example, I have asked what action they will take to get more police on the beat; as well as delivering increased funding for schools in the next spending review.
I believe that Boris Johnson is the candidate most able to deliver these and other important policies for the UK.
As Mayor of London, he led from the centre-ground of British politics. His term at City Hall saw the murder rate fall by 50% and overall rates of crime came down by 20%. He secured major investment in the transport network, delivering a series of crucial upgrades to the underground network. Tube delays fell by 30%. The number of people killed on the roads also fell.
Boris presided over the 2012 Olympics, one of the greatest events ever staged in this country. I worked with him on this project, and I know the huge effort he put into making a spectacular success. He also promoted and expanded the London Living Wage. All of this was delivered whilst cutting taxes.