(CNN) - Barack Obama won two more superdelegate endorsements Thursday, narrowing his deficit with Hillary Clinton to seven.
North Carolina Rep. Brad Miller and Washington Rep. Rick Larsen both announced they will cast their superdelegate votes for the Illinois senator.
"The decision was not easy," Miller, a two-term congressman, said in a statement. "Senator Clinton has run an impressive campaign, and has spoken eloquently to the concerns to working and middle class American families. She is one of the great leaders of this generation.
"Senator Obama understands that he has the chance not just to win the election this year, but to be a great president," he added.
Miller's district, which includes Raleigh, overwhelmingly voted for Obama Tuesday, 63 percent to 35 percent.
Larsen, a three-term congressman whose district lies in the northwest area of Washington state, praised Obama as the "best candidate to turn our country's hopes for a better future into reality."
"This week, Senator Obama has proven that he is tough and resilient," he said. "He has shown that he can take a pounding, come back and continue to communicate with the public to deliver his message of hope and change."
Obama easily defeated Clinton in Washington's February 19 caucus, 68 percent to 31 percent.
The two endorsements bring Clinton's advantage over Obama among superdelegates down to seven, according to CNN's estimate; Clinton has the backing of 267 superdelegates, while Obama has 260.
Since Tuesday's primaries, Obama has gained six superdelegates while Clinton has picked up one. But Clinton also lost a superdelegate Wednesday - DNC member Jennifer McClellan switched her support to Obama - for a net gain of zero.
(Updates with Larsen endorsement)