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Santorum Announces 2012 Run

In it to win it: Former Pennsylvania GOP Senator Rick Santorum announced his presidential candidacy on Good Morning America Monday, apparently undeterred by his 2007 re-election loss.

06.06.11 8:49 PM ET

In it to win it: Former Pennsylvania GOP Senator Rick Santorum announced his presidential candidacy on Good Morning America Monday, apparently undeterred by his 2007 re-election loss.