However, it is Barack Obama who holds the modern record for overall losses, at least through 2014. President Obama has presided over two devastating midterms for his party. From 2008 to the present, Democrats in the Obama era have racked up net forfeitures of 11 governorships, 13 Senate seats, 69 House seats, 913 state legislative seats, and 30 state legislative chambers. In the latter three categories, Obama has doubled (or more) the average two-term presidential loss from Truman through Bush.
It may well be that Obama can moderate these totals in 2016 by helping Democrats in a larger-turnout White House year. Still, Democrats would have to fare exceptionally well in the next round of sub-presidential races for Obama to escape the cellar.