According to Gallup’s data, 39% of GOP voters said last year that the amount of money they paid in income taxes was fair. This year, that number among Republicans jumped to 56%.It’s important to note that income taxes have not changed. We’re talking about perceptions: when Obama was in office, most GOP voters thought tax rates were unfair, and with Trump now in office, these same voters have decided they’re satisfied with those same tax rates after all.Under the traditional rules of the political discourse, in which both sides are always to blame in equal measure, this is supposed to be the part in which we acknowledge that Democratic voters are just as unprincipled as Republican voters, just in the opposite direction. Except, that’s quantifiably wrong: on tax fairness, Gallup found Democratic attitudes have been quite steady for many years, and didn’t change much at all after Trump took office. The same is true on polling regarding Syria and the state of the economy.The key takeaway here isn’t a look at the polarized electorate, but rather, the asymmetric polarization. The New Republic’s Brian Beutler had a good piece on this the other day, arguing, “You can draw any number of inferences from this observation, but the most inarguable, in my opinion, is how devastating it is to the conceit that U.S. political dysfunction … should be attributed to both parties in equal measure.”Postscript: The Milwaukee Journal Sentinel had a related item over the weekend, noting that for many voters, partisanship is so strong, it even alters perceptions of past events, not just future expectations: “When GOP voters in Wisconsin were asked last October whether the economy had gotten better or worse ‘over the past year,’ they said ‘worse’ – by a margin of 28 points. But when they were asked the very same question last month, they said ‘better’ – by a margin of 54 points. That’s a net swing of 82 percentage points between late October 2016 and mid-March 2017. What changed so radically in those four and a half months? The economy didn’t. But the political landscape did.”