[gatorbait]

the Bull Moosers were failures

In the end, they did fail.That particular election led to the election of Woodrow Wilson, whom I have come to regard as one one the 5 worst Presidents ever.
I believe firmly that the Bull moosers truly believed in their cause , right into March ,1913.I also believe that,thought certain of their platform was enacted ,or at least given lip service, in the main, they remain a failed party.

[inquest]

That's all well and good, but what I was referring to was their agenda. They managed to get their agenda implemented by dangling it in front of the major parties. As third parties have historically been able to do once they acquire sufficient momentum.