Honestly, it's a tough one to answer but I can't ever forsee a situation where I'd agree that a vote should be given simply on the basis that the recipient may as well be given a go.
It sounds daft and I have no desire to come across as a) keyboard warrior or b) painfully delusional but if it...
You know what the problem is with voting for a joke party (yes I know, their numbers are currently up, no it won't last, yes you can bounce this when Farage is standing outside No 10.) as a protest?
If enough people do it the daft *******s might actually get in.
Sure, it'll send a message but...