PITTSBURGH and BETHLEHEM, Pa. — Pennsylvania Sen. Bob Casey is in denial after losing his race for a fourth term to Republican Senator-elect Dave McCormick, and clinging to a long-shot gamble that …{ai:summary}<p>It seems there was no content provided for summarization. Please provide the text or topic you would like summarized.</p>

Bob Casey still refuses to concede Pennsylvania Senate race to Dave McCormick, counting on long-shot Philadelphia ballots to save his seat

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