I live in a flat, so they can't get at me !!
But I'd say ...
To a trot ...
You won't increase the IHT threshold ... so fcuk off and die (or whatever).
To a LibDem ...
You won't increase the IHT threshold enough ... so fcuk off and die (or whatever).
To a Tory ...
If you promise, absolutely, unequaivacally, truly, definitely, positively, cross your heart, that you really, really, really are going to increase the IHT threshold to £1m, like you've said, then come in for a cup of tea. If not, then, fcuk off and die (etc)