It takes 2/3 support of both Houses of Congress to propose an amendment to the Constitution to the states. And I don't hear the RINO-controlled House making the same noise. So Senate Democrats along with Cruz are blowing scorching hot air, the Democrats likely politicking for 2014, Cruz probably trying to position himself for 2016.
The amendment seems innocuous. It seems to address only campaign finance when in fact its effect has a much larger range. Senator Cruz is drawing attention to this fact and I heartily approve.