So who should they vote for, in that two party system without preferential voting?There is no such thing as a reasonable candidate for the Republican or Democratic parties. They are tools of the entrenched oligarchy and no reasonable person should vote for them.
You're saying nothing. You're not even doing the most basic attempt to organise and promote a third or even fourth option to vote for. You're just making meaningless noise which makes you feel better about being an armchair rebel.