If by that you mean voting for a 3rd party candidate, then I guess the answer is no. Because no 3rd party candidate has ever won, and the odds are they will never win. If they are a serious candidate they will run in the Republican Party. Just like Reagan did, much to the chagrin of the Party masters who hated Reagan. Problem is I haven't seen a Republican who can impress the conservatives, the party loyalists, and and the independents like Reagan did.
We would never of had Reagan had he ran on a 3rd party ticket because he couldn't overcome the Party masters.
And you are wrong about 3rd party. The republican party was 3rd party until the Whigs quit listening to the electorate, and then they couldn't get elected. Being a whig was a political kiss of death.
The same thing can happen to the republicans.
I'm working hard to make sure that being a liberal republican is a political kiss of death, so the party can be replaced by a conservative party.
/johnny
But you can't do it by voting for them in the general election.
Since your liberal republicans lose anyway, you aren't losing anything if you refuse to reward bad behavior.
/johnny