Sen. Brownback, above, along with Sen. Biden, both endorse the same Iraq plan.
WASHINGTON (CNN) - Sen. Sam Brownback, R- Kansas, and Sen. Joe Biden, D-Delaware, will hold a news conference in Iowa on Friday to discuss their plan for Iraq, in what campaign officials say is the first ever bipartisan presidential campaign event in U.S. history.
Brownback and Biden are both running for president.
"Joe and I might be running for the nomination of two different parties, but we agree on one thing: the American people want progress in Iraq and this represents a viable way forward to stability and success," Brownback said in a statement released by the campaigns.
Biden added that he looked forward to the joint-campaign event "to explain how the Biden-Brownback-Boxer amendment makes Iraq the world's problem while establishing a political solution that gives Iraq's warring factions breathing room to resolve their differences."
The amendment aims to establish a federal system of government in Iraq and passed in the Senate with a vote of 75 to 23 last month.
"Decentralizing power in Iraq offers the best chance for Iraqis to live in a peaceful, united country where they can resolve their differences,” Brownback said. “It is time to begin the political surge we desperately need to help stabilize Iraq so we can get our troops out of harm's way.”
According to the latest Des Moines Register Poll, Sen. Brownback is registering at 2% among Republicans in the state, while Biden has support from 5% of the Democrats.
- CNN Assignment Editor Katy Byron