Republican voters say they prefer more progressive tax plans, at least when the plans are anonymous, a new poll from a progressive think tank shows.

Data for Progress, whose goal is to "show how a progressive agenda can win nationwide," worked in tandem with YouGov Blue to conduct a survey which pitted the tax plans of President Trump, former Vice President Joe Biden, and Sens. Bernie Sanders (I-Vt.) and Elizabeth Warren (D-Mass.) against one another. Those polled were presented with a graph that showed prospective income tax rates for people of different incomes under each plan, but the candidates' names were nowhere to be seen.

Per the poll, Warren's plan — which would aggressively tax the wealthy at higher rates than lower-income people — was the most popular and considered the fairest overall, even among Republican voters, 35 percent of whom preferred Warren's compared to 29 percent who favored Trump's regressive tax rate.

We took the @gabriel_zucman chart showing how tax rates would differ under the Warren, Sanders, Trump and Biden tax plans and asked voters which they would prefer. They overwhelmingly preferred the @BernieSanders and @ewarren tax plans. https://t.co/vF7pDOgdPH pic.twitter.com/HBHz3Vonj5 — the supreme court will destroy everything we want (@SeanMcElwee) October 15, 2019

Among Democrats, Sanders' and Warren's plans were effectively tied. Biden, meanwhile, appears to be lost in the wilderness on this one. YouGov conducted a survey of 1,024 U.S. voters online. No margin of error was reported. Read more at Data for Progress. Tim O'Donnell