David Cameron may have used the slogan "Vote blue, go green" in the past but, judging by the views of his party's candidates, it's one he'd be wise not to repeat at the election.
A new survey of 141 Tory candidates  in the party's most winnable seats by ConservativeHome and ConservativeIntelligence has found that reducing Britain's carbon footprint is their lowest political priority (see chart). Just eight of the party's candidates said it would be a top priority for them in the next parliament.
If Cameron can't persuade his own party that the environment should be a priority, he's unlikely to persuade the electorate that it should be. And if this is the state of affairs under an ostensibly green leader, just where would Tory opinion lie under a climate-change sceptic such as David Davis ?
But the truth is that Cameron's own interest in the environment has diminished visibly in recent times. His green credentials were discredited by his decision to court Václav Klaus, the climate-change-denying Czech president. He has refused to advocate the levels of taxation and regulation needed to reduce environmentally damaging behaviour.
The Conservative Party seems increasingly to have assumed that Cameron's initial focus on the environment was merely part of his early mission to ''detoxify" the Tory brand. He has said little since to disprove this assumption.
It is now clearer than ever that no environmentally responsible individual can risk a vote for the Tories at the election.