By , (Reuters) - Voters in trend-setting California backed a ballot proposal by Uber and its allies that cements app-based food delivery and ride-hail drivers’ status as independent contractors, not employees, according to a projection by data provider Edison Research.Victory in the most expensive ballot contest in state history is a rebuke to state legislators and allows Uber, Lyft and allies to set the employment terms of the gig economy that they helped create. Some had threatened to leave California, their home market, if they lost.The measure, known as Proposition 22, marked the...…By , (Reuters) - Voters in trend-setting California backed a ballot proposal by Uber and its allies that cements app-based food delivery and ride-hail drivers’ status as independent contractors, not employees, according to a projection by data provider Edison Research.Victory in the most expensive ballot contest in state history is a rebuke to state legislators and allows Uber, Lyft and allies to set the employment terms of the gig economy that they helped create. Some had threatened to leave California, their home market, if they lost.The measure, known as Proposition 22, marked the...WW…