More than a third of the advertising tied to the presidential race has been funded by nonprofit groups that will never have to reveal their donors, suggesting that a significant portion of the 2012 elections will be wrapped in a vast cloak of secrecy.

LAS VEGAS — Rick Santorum is starting to receive the Newt Gingrich treatment.

With polls showing Santorum the more serious threat in two states voting on Tuesday, Minnesota and Missouri, Mitt Romney’s campaign on Monday unloaded on the former Pennsylvania senator the way it did on Gingrich in the run-up to last month’s Florida primary.

Three states hold early nominating contests Tuesday — and while none of those contests is as high profile as the early states that have come before (or the Super Tuesday states up ahead next month), the four GOP contenders are nonetheless hustling to make the rounds and make a competitive showing.

DALLAS - Nancy Brinker, founder and chief executive of Susan G. Komen for the Cure, took home $417,000 in salary in 2010, according to financial documents posted on the charity’s Website, and paid 50 top executives more than $100,000 each.

“We are the only people on the earth that put our hand over our heart during the playing of the national anthem. It was FDR who asked us to do that, in honor of the blood that was being shed by our sons and daughters in far-off places.”