At least one person is confident Democrats will hang onto the Senate.
White House Senior Adviser Dan Pfeiffer told NBC's "Meet The Press" the mid-term elections are about voter turnout and not Obamacare.
He also said the president will not delay the individual mandate for the Affordable Healthcare Act.
Last week a Republican won a special election for a Florida congressional seat.
Republicans claim a pushback against Obamacare helped in that victory.