Yes, history will repeat itself with a Hillary! Presidency, but it's essential that we get as many conservative voters out to support the down ticket races so as to have strong opposition to her (Or Obama, for that manner, who, even though his beliefs might be more dangerous, I personally believe would be easier to oppose because he doesn't have the "machine" in place that Hillie does). We need a reason for people to want to get to the polls.
A dedicated core of 60-70 House members and 25-30 Senators can do more than a squishy, wishy-washy majority of 54.