No conservative would EVER vote for a Democrat. The option is to vote third party conservative, not Democratic.
Conservatives have been told time and time again that “a conservative can’t win in this state [so we the Republican Party leadership block all of them from running].” We were told that about Arlen Specter. But when a conservative finally gets a chance to run, they often CAN win.
The easiest way to settle the argument is to have a clean primary that gives the chance to vote for a conservative. If the RINO won a fair primary, conservative citizens would be much more likely to vote for him. That also would tell us that we are part of the party, instead of tools who are just used to vote for left-wing Republicans.
If a teammate beats me fair & square for the starting job, then I’ll block for him. But if I get cheated out of my chance to even try for the job, then I’m not really part of the team.