This doomsday propaganda from the left about the GOP being over occurs every cycle and its obviously not true since the GOP holds the house and senate.
The GOP holds the House thanks to gerrymandering. The GOP holds the Senate thanks to a large number of rural states with small populations, compared to a smaller number of states with large urban populations.
In 2012 perhaps, but not in 2014 and 2010. In 2012, they lost the House popular vote, but they won it in both 2010 and 2014.
Beyond just gerrymandering, the Republicans also benefit from the concentration of Democratic voters and also the lower turnouts the occur in midterm years.
I am fine with ending gerrymandering, but I am not fine with returning to the era of corruption, Bush-Delay style.