The consequences of Obama failing is that people are going to vote Republican for a long time after Obama leaves office.
Reminds me of two instances, alley. Democrats won a huge victory in 1976, Nixon had resigned in disgrace (he was almost sure to be impeached din the House and convicted in the Senate, by resigning at least he saved some face and kept his pension and other benefits). Republican Party was in tatters.
Then along came 1978, Republicans made substantial gains in the House and Senate. Both still remained in Democratic control, but number of Republicans in both increased. Then came 1980, when Republicans won a sweeping victory. I remember in 1976, one columnist was bemoaning the fact that USA was on its way to becoming a one party state. There was a complete turnaround in 1980.
Then came 1982. The country was at peace, Reagan was hugely popular, the economy was roaring along (thanks to huge deficit spending by Reagan). Yet Republicans suffered heavy losses in the 1982 elections, they lost 27 seats in the House. By 1986 they had lost control of the Senate (House was Democratic all along).
So nothing lasts forever, things go in cycle.