Big spending by outside groups isn't just having an impact on presidential politics. Independent expenditures are creating some big waves in congressional races as well. Take the YG Network and the Republican primary in the Indiana Senate race.
YG Network describes itself as supporting center-right policies and the policymakers who fight for that agenda. YG is short for "Young Guns" a brand created in part by House Majority Leader Eric Cantor. The YG Network and two similarly named sister organizations were started late last year by former Cantor aides.
And in their short existence, these YG groups have generated their share of controversy. Most recently, it came in the form of a mailer sent to Indiana voters.
"A reader actually e-mailed me a copy that he received, which he was quite upset about," says William Jacobson, who runs the conservative Legal Insurrection blog and wrote about the mailer.
Last week, the YG Network spent more than $200,000 on mailers in support of Indiana Sen. Richard Lugar, who is facing a tough primary challenge from the state's treasurer. What got people upset is what the mailer said. In not so many words, it encouraged Democrats and independents to vote in the Republican primary and support Lugar.
"You're basically saying, 'We don't care what the Republican voters think. All we care is that Richard Lugar gets the nomination,' and I think that's what sits poorly with a lot of people," says Jacobson.
Generally, encouraging people from the other party to try and sway your party's primary is a big political no-no. Mitt Romney was none too happy when Rick Santorum's campaign did something similar in the lead-up to the Michigan presidential primary.
"It's confusing people," Romney said at the time in an appearance on the Fox News Channel. "It's a new low in this campaign."
When it comes to the YG Network mailer in the Senate race, it's leaving a lot of Republicans baffled.
"Why a 'Young Guns' movement to try to make sure we have future leadership that's strong and advocates consistent conservative principles would join in with Lugar is just strange," says Mark Souder, a former GOP congressman from Indiana.
He describes it as baffling not least because, at 80 years old, Lugar is one of the longest-serving members of the Senate and could hardly be described as a "young gun."
This isn't the first time the YG groups have created a flap within a Republican primary. The YG Action Fund, a superPAC, spent $52,000 on radio ads to support Rep. Adam Kinzinger in an incumbent-versus-incumbent primary in Illinois this year. It worked, and 10-term Rep. Don Manzullo lost.
"It was very upsetting to him and many friends of his that they got involved in that primary. But at least you could understand a little," says Souder, who served in Congress for many years with Manzullo. "This was much more bizarre."
For Cantor, the majority leader from Virginia, these intraparty forays by the YG groups are generating ill will. Virtually every story about this controversial mailer describes the YG Network as a Cantor-affiliated group. And those are the charitable ones. Many conservatives and conservative groups are blaming Cantor directly, including the Club for Growth, which has endorsed the challenger in the Indiana Senate race, Richard Mourdock.
"You know, there's a big difference in what those two candidates stand for and it's just unfortunate that Eric Cantor and the Republican leadership is promoting the more liberal candidate," says Barney Keller, spokesman for Club for Growth. a small government, anti-tax group.
The club has poured nearly $1.5 million into the race. YG Action and YG Network did not respond to repeated requests for comment. And Cantor's office stressed that he has nothing to do with the YG superPAC or any other superPAC.