A new poll released Tuesday shows Democrat Paul Davis leading incumbent Republican Gov. Sam Brownback by 10 points, 51 percent to 41 percent, even though 19 percent of those surveyed said they have never heard of Davis.

That was enough for the independent polling firm Rasmussen Reports to shift Kansas from “Leans Republican” to “Solid Democrat” in its 2014 Gubernatorial Scorecard.

An earlier poll by Rasmussen in mid-April showed Brownback ahead, 47 percent to 40 percent.

Since then, Brownback’s approval ratings have dropped. Now, only 40 percent of those surveyed approve of the job he is doing as governor, compared to 47 percent in April. And nearly half (49 percent) say the state’s budget situation is worse than it was a year ago.

The poll was released the same day Brownback unveiled “Road Map 2.0,” his economic agenda for the next four years, which calls for staying largely on the same course of cutting taxes and easing regulations, which have marked his first term in office.

Even more troubling for the Brownback campaign, the poll shows Davis currently getting 30 percent of the Republican vote and 20 percent of those who identify themselves as “conservatives.”

Davis also leads among both men and women, though his lead is wider among women, and across all age groups, with his biggest advantage coming from younger voters, ages 18 to 39.

But the most interesting detail may be the split by the voters’ level of education. Brownback leads 56 percent to 36 percent among those who haven’t completed high school, and 59 percent to 36 percent among high school graduates. But Davis leads among all others, and the margin of that lead widens as the voter’s educational attainment increases.

Among those who have at least some graduate school credit, Davis leads 60 percent to 35 percent.

The survey of 750 likely voters in Kansas was conducted Aug. 6 through 7, immediately after the primary election. The margin of sampling error was plus or minus 4 percentage points.