WASHINGTON - National political groups are funneling millions of dollars into Minnesota's governor race as part of a massive infusion of cash generated by interest groups across the country.
Since July, the Democratic and Republican governors associations have made major donations that brought their total contributions so far this year to more than $2 million.
Partisans on both sides of the political divide estimate that by the time voters go to the polls next month, independent political groups funded largely by special interests and corporations will have spent between $10 million and $15 million on the Minnesota governor's race alone, much of it on ads attacking DFLer Mark Dayton, Republican Tom Emmer and Independence Party candidate Tom Horner.
Amid that surge of campaign cash, some reformers worry about a lack of transparency. More ads are getting funded with dollars raised outside the state, with less stringent reporting requirements and from sources whose identities don't have to be immediately disclosed.
"A lot of money is coming in, and people just don't know where it's coming from," said Mike Dean, executive director of Common Cause Minnesota.
Minnesota's competitive governor's race has drawn attention as one of the few possible Democratic pickups in the nation.
"Minnesota is seen as one of the few bright spots around the country," said Ken Martin, executive director of Win Minnesota, a left-leaning political action group that has taken in some $1.5 million from the Democratic Governor's Association since the beginning of the year.
Win Minnesota is the main independent expenditure entity in the state funding Democratic-aligned groups such as Alliance for a Better Minnesota, which has been running TV ads going after Emmer.