I also visit Hertford and Stortford, represented by Julie Marson, a member of the 2019-intake. In that once Tory stronghold, the campaign seems to be very much on Party lines.
But this electoral Titan has an Achilles heel – tax rises which, rather than planning or HS2, are the real threat to future Chesham & Amershams.
We reveal the four candidates on tonight’s shortlist – and the unusual way in which the selection has been partially centralised.