File: Don Beyer talks with his campaign aides after a Mt. Vernon District Democratic candidate forum. (J. Lawler Duggan/For The Washington Post)

Three top advisers of President Obama’s administration and political campaigns have announced their support of former Virginia lieutenant governor Donald Beyer, one of 10 Democrats campaigning for the party’s nomination in northern Virginia’s 8th congressional district.

Pete Rouse, Jim Messina and Julianna Smoot are endorsing Beyer and hosting a fundraising event for grassroots supporters of the campaign later this month in Arlington, the Beyer campaign announced.

Democratic congressional candidate for Virginia’s 8th district answers questions about his his nickname, his former boss Barney Frank, and if gay marriage will get federal support by 2016. (Theresa Poulson/The Washington Post)

“Don is that rare candidate who has mastered foreign and domestic policy and has the experience and track record to work the legislative side to accomplish policy goals,” said Messina, Obama’s 2012 presidential campaign manager and former White House deputy chief of staff.

With just over a month before the June 10 election, the campaigns are in full swing. The Beyer campaign, which raised the most money in the field ($668,497) according to campaign finance reports that covered the first quarter of the year, will also run a radio ad starting Wednesday using Obama’s voice supporting the Affordable Care Act, which Beyer supports.