According to the campaign finance tracking website Maplight,
supporters of Proposition 32 have raised more than
$45-million.
Opponents have raised more than $58-million.
The measure on November's ballot would ban direct campaign
contributions from unions and corporations and ban automatic
paycheck deductions for political purposes.
Charles Munger Junior has contributed the most to the Yes
campaign, giving more than $22-million.
A Phoenix-based group called Americans for Responsible
Leadership has given $11-million.
The biggest contributions from groups opposing Proposition 32
include $20-million from the California Teachers Association and
$11-million from the Service Employees International Union.