Republican presidential candidate, former Massachusetts Gov. Mitt Romney holds a town hall-style campaign event at RC Fabricators in Wilmington, Delaware.
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IN THE SHADOWS: Workers are silhouetted against a U.S. flag before a news conference by conservative Rick Santorum to announce his dropping out of the Republican presidential race in Gettysburg, Pennsylvania.
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Workers hang a U.S. flag as the backdrop for conservative Rick Santorum's stage.
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The crowd listens as Mitt Romney speaks during a campaign stop at RC Fabricators.
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DROPOUT: Rick Santorum is seen after officially dropping out of the race to win the White House.
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Mitt Romney speaks at the spring reception for the Republican Committee of Chester County in Mendenhall, Pa.
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Laurice Cox, a supporter of Rick Santorum, holds a sign for the former presidential candidate outside a caucus location in St. Charles, Mo.
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Supporters listen as Mitt Romney holds a town hall-style campaign event at RC Fabricators.
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SO LONG, SANTORUM: Rick Santorum announces his suspension to win the Republican nomination during a news conference in Gettysburg, Pennsylvania.