They took a poll of Democrats and Republicans on education policy. They presented a "Republican" plan and a "Democratic" plan, giving a brief precis of each approach.
The Republicans massively favored the Republican plan. The Democrats massively favored the Democratic plan.
Which of the two plans was the Republican and Democratic plan was randomly selected for each participant in the poll. It wasn't the contents of the plan that determined whether someone favored it. It was just which party was supposed to have originated it.
Fascinating, I say.