The race to succeed retiring Rep. Darlene Hooley (D-Ore.) remains wide open, according to a new poll released Thursday.

Republicans believe the seat is a possible pick-up opportunity in a year where many seats lean Democratic.
In the GOP primary, voters are divided between businessman Mike Erickson and former state party chairman Kevin Mannix. Erickson received 44 percent and Mannix got 40 percent in the Survey USA poll, which has a margin of error of 5 percent. The race is breaking down along ideological lines, as Erickson leads by 30 points among pro-choice voters and Mannix leads by 8 points among pro-life voters.

The Democratic primary is just as unsettled. State Sen. Kurt Schrader receives 23 percent in the poll while Steve Marks, a one-time gubernatorial chief of staff, gets 20 percent. The margin of error for the Democrats is 4 percent.
Hooley, who announced she wouldn't seek a seventh term in February, had won her 2006 race by 11 points.

Both of the Republicans have raised more money, about $100,000 each, than the Democrats, who raised about $26,000 each.

Watch the Erickson's just-released campaign ad against illegal immigration and video of Mannix speaking after the jump.

Erickson's ad:

Mannix's campaign announcement: