Republicans should enjoy this wave while they can

But if compare the 2014 exit polls to the 2010 exit polls, the Republicans are treading water.

In 2010, Republicans lost 18-29 year olds 55 percent to 42 percent.

In 2010, Republicans lost Latinos 60 percent to 38 percent.

In 2010, Republicans lost those making less than $50,000 54 percent to 43 percent.

Except for Asians, where Republican went from down 58/40 in 2010 to almost even 50/49 in 2014, the Republican 2014 margins among all demographics are the mirror image of their 2010 results.