That logic presumes that A over B results in government getting less involved in people's lives which is what the person I was responding to argued.
If you are genuinely voting on that issue as your primary and core issue, "sending a message" even if it renders your vote otherwise worthless is the only option that has the slightest chance of success. Voting for A or B (as both do nothing in relationship to your single issue) will always ultimately bring about failure.
I guess what I'm trying to say is if people never stand on principle, the principle isn't relevant and is not a genuine want but rather a trivial wish of no real impact. I can also wish to win the lottery or to become a millionaire through an inheritance too. It doesn't mean its a genuine desire I take action on.
Sure they would, so long as they are trying to have their vote directly effect a change. Outside of "sending a message that I support someone else," the logical voter must consider that their vote will only change an outcome if there's a tie between candidates, and it's usually obvious which two candidates that tie will be between. Such a voter will need, then, to choose the candidate between those two that they would prefer, even if they hate them both. To do otherwise may help send a message, may help them feel that they are uncompromising in their moral fortitude, or may feel good, but their actual vote will not matter.
That's one of the reasons that ranked voting systems are so nice. It allows you to say "I prefer X to Y if it comes down to that, but I much prefer N,A,D, and Q over them both."