Months ago, without saying it publicly, Democrats gave up hopes of regaining control of the House of Representatives and began concentrating resources on saving their command of the U.S. Senate.
That shift of emphasis, coupled with the natural dynamics of nonpresidential elections and the prospect of a very low-turnout November election, has raised Republicans’ hopes of recouping their 2012 congressional losses in California.
As many as eight Democratic members, especially four first elected in 2012, could be at risk this year.
http://www.sacbee.com/2014/06/10/6470831/dan-walters-democrats-congressional.html