2010 United States Senate election in New Hampshire

Incumbent Senator Judd Gregg (R) retired instead of seeking a fourth term, and was succeeded by Kelly Ayotte, who won the open seat by over 23 points.In February 2009, President Barack Obama offered, and Gregg accepted, nomination to the position of United States Secretary of Commerce.He cited "irresolvable conflicts" over policy related to the Commerce Department as the main reasons for his withdrawal, but also indicated support for President Obama.Hodes was criticized for supporting President Obama's Economic Recovery package, a carbon energy tax, and Affordable Care Act.One ad questioned Ayotte's honesty in dealing with the Lakes Region Ponzi scheme which defrauded investors of almost $80 million.
Results by county:
Ayotte—40–50%
Ayotte—30–40%
Lamontagne—30–40%
Lamontagne—40–50%
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