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...Martha McSally in Arizona, Cory Gardner in Colorado and Susan Collins in Maine all face tough re-election battles....
...In the Democratic primary of 1976 — the first after Richard Nixon’s resignation — a similarly crowded field produced the unlikely nominee of Jimmy Carter, the governor of Georgia, who knocked out better...
...Four of the last seven presidents were governors: George W Bush, Bill Clinton, Ronald Reagan and Jimmy Carter....
...“I will not sit idly by while the president uses political promises to imperil the people of Colorado,” Cory Gardner, a senator from the state, said last week....
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