I did when he became PM because he espoused what I believe to be Tory values. But I don't now.
The policies that he and his government now promotes are not Conservative at all. It has thrown Northern Ireland to the dogs as a part of the Brexit agreement (thus trashing the “Unionist” part of the Tory party’s title); it continues to preside over a now largely unnecessary regime of Draconian personal restrictions, the likes of which this country has never seen, even in wartime; it promotes a programme of huge public spending which will inevitably lead to higher taxes; it plans to drastically alter the lifestyles of UK citizens and threaten UK competitiveness with its ridiculous and largely pointless environmental targets; it continues to build “Big Government” both nationally and locally.
But that said, if a million quid rode on it, I'd include him in the tally of Tory PMs. :-)