Senate races tightening ahead of Obama 's race . On Sunday , Clinton will take her turnout machine to New Hampshire to support Sen. Jeanne Shaheen who is in a surprisingly close tussle with challenger Scott Brown . Best GOP can hope for is a slim victory . Turnout will be critical for both parties .
Senate races tightening ahead of Obama 's race . Best GOP can hope for is a slim victory . Turnout will be critical for both parties .