(CNN) – Mitt Romney will deliver a policy address Friday at an Americans for Prosperity summit in Washington, according to the group and the Republican presidential candidate's campaign.
The conservative group is partially funded by billionaires Charles and David Koch and has served an influential role in the tea party movement.
Romney, the former Massachusetts governor who has not typically enjoyed strong support from the grassroots movement, will speak at the event Friday afternoon. GOP rival and former pizza executive Herman Cain will also speak at the gathering Friday.
While Romney and Cain are in the nation's capital, fellow Republican candidates Texas Gov. Rick Perry, former House Speaker Newt Gingrich, Rep. Michele Bachmann of Minnesota, former Sen. Rick Santorum on Pennsylvania and Rep. Ron Paul of Texas will deliver remarks at a GOP fundraising banquet in Iowa, the first-in-the-nation caucus state.
– CNN's Paul Steinhauser and Gabriella Schwarz contributed to this report.