Yesterday we brought you David Brooks’ take on Rick Santorum’s appeal to working-class voters. Matt Yglesias takes a more skeptical look at that claim, going point-by-point through Santorum’s tax plan:

There are a number of arguments you can make in favor of this agenda of lower taxes on corporations and rich businesses—conservatives of various stripes have been making them for decades—but in terms of the overall focus of his fiscal agenda, Santorum is in no way different from Romney or John McCain or George W Bush or Bob Dole or any of the other long list of Republicans who've touted regressive tax cuts as a way to super-charge growth.