MINNEAPOLIS, Minnesota (CNN)  -- A three-judge panel will begin hearing testimony Monday in Republican Norm Coleman's post-election legal challenge for the U.S. Senate seat. Norm Coleman will argue many votes were not recounted properly in his bid for re-election to the U.S. Senate. An election-night count showed Coleman, who was the incumbent senator from Minnesota, ahead by a few hundred votes. A recount handed victory to his opponent, Democrat Al Franken, by 225 votes. About 3 million ballots were cast in the race. "We have a good shot at this, and so I proceed with that in mind," Coleman said last week, calling Franken's lead "artificial."
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About 3 million ballots cast in race; Al Franken won recount by 255 votes
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Norm Coleman's attorneys to argue ballots recounted improperly in three ways
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Coleman hired attorney who led GOP Florida recount effort in 2000 presidential race
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Franken to ask Supreme Court to order governor to seat him temporarily
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If those ballots are allowed, they could flip the race back in @placeholder's favor.
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The burden to prove the ballot discrepancies falls on the @placeholder team, Ginsberg said.
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The @placeholder team has said it will also file a class-action lawsuit on behalf of the absentee voters whose ballots were rejected.