First, the context of the quote is in that many folks here (who happen to be Democrats) have gotten extremely giddy over favorable demographic trends for Democrats, such as the re-enfranchisement of felons, post-1965 immigration laws, etc. It was also in response to absolute fawning over President Obama, which gets under my skin. When people start treating the man like he's some kind of demigod, it definitely provokes me into saying things I otherwise would not. Many even suggested ideas like bringing all the Syrian refugees to swing states, "maintaining population balance" by deporting white males for every immigrant let in, etc. I was going the other way with it and see what the reaction would be. No one believes in a truly universal franchise (no one thinks death row inmates or 5-year-olds should vote), I was just floating the idea that maybe some more restrictions on voting isn't such a bad idea.
That being said, a poll tax is unconstitutional and would obviously never happen, and I know this. 
Was it trolling? Partially. The goal was definitely to get a rise out of people, but that doesn't mean I wouldn't like to see a more R-friendly electorate. That would be an, err, extreme way to do it. I suppose if someone thinks a voter ID equals a poll tax, then I suppose it would be a $25 poll tax or something. I would never back a $1000 poll tax or something that would be too large of an expense though....that would be insane.
Yeah, it's almost like you couldn't click on the link with the quote to actually find out your context.
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