You’re out canvassing.
You’re on the doorstep.
You’ve asked someone which party they’re going to support and you’ve not got an answer.
You’ve tried all the usual who did you vote for last time / is there any party you’d never vote for questions without joy.
What do you try next?
Ask them if the like Isaac Asmiov.*
Because as Mary Reid writes over on Lib Dem Voice:
YouGov has the hard evidence for something that a lot of us have suspected for a long time – that “There is a strange correlation between supporting the Liberal Democrats and being a fan of Science Fiction“.
* For younger voters try John Scalzi. For older voters try Alfred Bester.