Seems like you answer your own question -- it's fun to speculate. The forum is full of these sorts of threads.
Personally, I'm not super fond of really far-reaching speculation: "If Ennis had accepted Jack's offer and they had gone to help out at the Twist ranch, would they have lived in the same house with the Twists and eaten their meals with them, and who would have done the dishes?" That kind of thing. For me, there's just not enough to go on to form sound opinions.
But as you see, there ARE some jumping-off points for speculation about Ennis' politics. And they're interesting for what they reveal about the movie and about Brokies' own ideas.
ok, but speculate with more than hunches. a profile of Ennis, or Jack, Alma, Lureen can tell us more about how they might have voted in an election.
1) demographic profiles are a good start:
income level, race, ethnicity, degree of religiosity, occupation, level of education2) then throw in hunches based upon our knowledge of Ennis' attitudes from the dialog:
for the 2008 election what would Ennis opinion of : same sex marriage, affirmative action, welfare, the war in Iraq, terrorism, the economic downturn, etc. ?
then you can put together a profile of Ennis or any of the characters for any election which they might have voted in, as someone said, probably starting with 1964
I would for the sake of diversity assume Jack did not die in 1983 and he also voted, because he and Lureen are the most likely of the main characters to be registered to vote, so I don't like throwing that character out of the mix.
I would also add Aguirre, OMT and wife, Newsom and wife, and the Malones.
how would they vote based upon what we can fathom of their demographic profiles and hunches about their opinions?