Earlier quoted context omitted.
(the answer, of course, is that it can't)
Passive gerrymandering. California's state lines were intentionally not redrawn before the last election, so as to not absorb Republican voters from Nevada, which would have diluted the democratic majority in California and made things tough for Feinstein. The OP is hinting through his username that somehow the Mt. Gox bitcoin exchange was involved.
Feinstein won 49.5 to 12.7; a landslide victory.
Gerrymandering had nothing to do with CISA.