WASHINGTON - One of the inaugural events of Minnesota's 2008 political season was a candlelight vigil on a drizzly night last fall.
Outside the Woodbury office of U.S. Rep. Michele Bachmann, nearly 200 protesters chanted "Override!" -- bolstering a $1.5 million national media campaign attacking Republicans in a veto battle over children's health insurance. More than $250,000 of it was spent against Bachmann in billboards, radio and television ads.
But none of this was done by a political party or candidate. It was orchestrated by two independent groups: the Service Employees International Union (SEIU), and Americans United for Change, a national coalition for liberal causes.
This year, advocacy groups unaffiliated with the two major parties are becoming a bigger part of the ever-growing onslaught of political cash, adding their unlimited bankrolls to what is expected to be the first billion-dollar presidential election in history.
And Minnesota, a key political battleground, is at the center of the spending bonanza, which is occurring despite new campaign finance laws intended to curb the influence of political money.
"This is not like the stock market, which goes up and down," said Fred Wertheimer, head of the national campaign finance reform group Democracy 21. "This only goes up."
As left-leaning groups buy ads against Bachmann and Republican Sen. Norm Coleman, on the other side of the political spectrum, a group called Defense of Democracies took aim at freshman U.S. Rep. Tim Walz last week. It is running $40,000 in TV ads in southern Minnesota, attacking him for siding with other House Democrats in a showdown over warrantless wiretaps.
Like many of the new special-interest lobbies that have entered the fray in recent weeks and months, Defense of Democracies declines to reveal its benefactors.