SPRINGFIELD-Attorney General Lisa Madigan and state Treasurer Dan Rutherford would be the Democratic and Republican nominees for governor in 2014 if the primary elections were held now, according to a new poll released Wednesday that spells trouble for Gov. Pat Quinn.

Among Democrats, the governor trails the three-term attorney general in a hypothetical 2014 matchup by a 31.9 percent to 22.9 percent margin, the poll by the Paul Simon Public Policy Institute showed. Former U.S. Commerce Secretary and White House Chief of Staff William Daley, the brother of former Chicago Mayor Richard M. Daley, drew 11.9 percent.

On the Republican side, Rutherford held a narrow lead over state Sen. Bill Brady (R-Bloomington), the GOP's 2010 nominee for governor. The spread between those two stood at 10.2 percent for Rutherford and 9.7 percent for Brady.

Rounding out the potential GOP field, U.S. Rep. Aaron Schock (R-Ill) had 9.1 percent, former U.S. Rep. Joe Walsh (R-Ill.) at 5.9 percent and state Sen. Kirk Dillard (R-Hinsdale) at 3.2 percent, the Simon poll showed.

The survey was performed on 600 registered voters between Jan. 27 and Feb. 8. The margin of error in the Democratic sample was plus or minus 5.5 percentage points, while the spread for Republicans stood at plus or minus 7.2 percentage points.

For Quinn, the negative poll results represent a critical blow for the first-term governor as girding among the candidates for the 2014 campaign begins, and fundraising commitments are sought.

Those polled gave Quinn poor remarks for the work he has done, with only 32.8 percent giving the governor positive job-performance ratings. The poll showed 51.3 percent disapproving of the governor's job performance.

Those findings represent a sizable slide for Quinn since the Paul Simon Public Policy Institute's polling unit last was in the field. Last summer, 42.2 percent of those surveyed carried a positive view of the governor's job performance while 49 percent disapproved.

Wednesday's poll results are in line with polling in November by the Democratic-leaning Public Policy Polling firm, which showed Madigan beating Quinn in a hypothetical one-on-one pairing by a 64- to 20-percent margin. That poll had Daley beating Quinn by a 37- to 34-percent margin.