Punters think it will have an impact
Just before the Andrew Neil video attack on Johnson was published the Tories were trading at 344 sell and 350 buy on the Sporting Index Commons seats spread betting market. Those are now down five seats.
On the Betfair majority market the Tories are down just a point.
Spread betting is much more sensitive here because the more people are right the more they win and the more they are wrong the more they lose.
Whatever the markets still think that Johnson will have a comfortable majority but not quite as big is was seen yesterday.