Democratic presidential hopeful Sen. Barack Obama, D-Ill., speaks at a rally Tuesday, Feb. 12, 2008, in Madison, Wis. Obama powered past Hillary Rodham Clinton in the race for the Democratic presidential nomination, taking the lead in delegates for the first time with three commanding victories in Virginia, Maryland and Washington, D.C.
Republican presidential hopeful Sen. John McCain, R-Ariz., greets supporters following primaries in Virginia, Maryland, and the District of Columbia, Tuesday, Feb. 12, 2008, in Alexandria, Va. He is flanked by Rep. Tom Davis, R-Va., right, and Sen. John Warner, R-Va., left. McCain took another step toward securing his party's nomination, winning all three contests despite lukewarm support from the conservative base.
Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y., speaks during a campaign rally at Don Haskins Center in El Paso, Texas, Tuesday, Feb. 12, 2008. Clinton has shaken up her staff and is turning her attention to must-win races next month in Texas and Ohio.
Ed Hyson made sure everyone knew he voted at Elmer Wolfe Elementary School in Union Bridge, Md., on Tuesday, Feb. 12, 2008.
Edwinna Baker studies the ballot before voting Tuesday, Feb. 12, 2008 at Gate City, Va., Middle School library in the state's presidential primary.
Marilyn Hart casts her ballot in the primary election at the Ray of Hope Baptist Church, Tuesday, Feb. 12, 2008, in Baltimore.
People vote in the District of Columbia's primary at Oyster Elementary School in Washington on Tuesday, Feb. 12, 2008.
Carrie Free, right, of Washington, hugs her friend Ellen Davis, after voting in the District of Columbia's primary at the Senior Wellness Center in southeast Washington on Tuesday, Feb. 12, 2008.
Voters line up to vote in the presidential primary at the Dover Baptist Church in Manakin, Va., Tuesday, Feb. 12, 2008.
A voter checks in at the registration table to vote in the presidential primary at the Crozier Fire House in Crozier, Va., Tuesday, Feb. 12, 2008. The polling place was moved into the kitchen and dining area after the original spot in the firehouse garage was too cold for the workers.
Fort Hill High School custodian Wally High spreads ice melt as he keeps the walks clear for voters Tuesday morning, Feb. 12, 2008, as snow falls outside the school, one of several polling places in Cumberland, Md., during the state's primary election.
Dai Ahmir Morgan, 2, wears an "I Voted" sticker as he stands with his mother Myisha Morgan, 22, after Morgan voted in the District of Columbia's primary at the Latin American Youth Center in Washington on Tuesday, Feb. 12, 2008.
Nick Rossi, 39, of Washington, sports an "I Voted" sticker, in Spanish, after voting in the District of Columbia's primary at Oyster Elementary School in Washington on Tuesday Feb. 12, 2008.
Voters cast their ballots at a fire station in the primary election, Tuesday, Feb. 12, 2008, in Baltimore.
Twenty-one-month old Harrison Moyer-Rickman, right, waits for his mother T.J. Moyer to vote in the primary election at a fire station, Tuesday, Feb. 12, 2008, in Baltimore.