Campaign finance bills now approved by both the state House and Senate would double the amount of money that people can give to political campaigns.
It would also block a proposal by Secretary of State Ruth Johnson that would require so-called "issue ads" to disclose who paid for them.
But the legislation does require political robo-calls to include contact information for the groups behind them.
Michigan has seen record amounts of money spent on campaigns in recent years. This legislation opens the door to more spending. Rich Robinson of the Michigan Campaign Finance Network writes:
Record spending and a continuing trend of diminishing accountability for that spending were the major features of Michigan's 2012 state election campaigns.
For more on the trends on campaign spending in Michigan, listen to this Stateside interview with Robinson.