@DrewDad,
I mean the general election. Presumably the Bernie supporters will vote Bernie in the primaries. But if Clinton wins the nomination refraining from voting for Clinton is a choice that others here have questioned.
You say that you hope everyone votes their conscience but I don't get what's objectionable to not voting if that is where one's conscience leads you.
For example, I am not going to lie and jump through hoops to register in a swing state so my vote could actually count. The states I last had nexuses in are California and Texas. Pretty much the two states with the most pointless general election votes.
I would definitely not bother voting for Clinton because my vote won't count for anything other than symbolism anyway and while I think Clinton is a perfectly decent human being I do not like her politics enough to waste time on symbolic support for her.
You seem to have a preference against my position and think that I should vote Democrat in the general election anyway, but why? Not voting sends a message and makes as much difference (none) in the general election for me in Tx. I applaud those who are willing to spend more of their time on civic duty even when it's purely symbolic but I only see downsides for me, I lose time and money and gain no greater influence in the process.