Most Americans consider midterm elections insignificant ; many do n't vote . Zelizer : Midterms can make a big difference , and this November 's vote is huge . If Democrats lose Senate majority , Senate 's woes would only grow . Julian Zelizer : Americans would lose influence , and replacing judges would be very difficult .
Most Americans consider midterm elections insignificant ; many do n't vote . Julian Zelizer : Midterms can make a big difference , and this year 's vote is huge . If Democrats lose Senate majority , Obama 's woes would only grow . Zelizer : Democrats would lose influence , and replacing judges would be very difficult .