Is "Millionaire Mary" — for Mary Burke — a political nickname equivalent to — for Scott Walker — "Scooter" and "Koch-Head"?

Over at The Daily Beast, Eleanor Clift — Eleanor Clift is still around? — pushes Mary Burke, Scott Walker's likely opponent in the fall. Clift begins:

Republicans call her “Millionaire Mary,” but Mary Burke has plenty of assets aside from her wealth to make her a strong contender to derail the reelection of Wisconsin Gov. Scott Walker, along with his dreams of the presidency. 

I am here in Wisconsin minutely following politics day by day — every single day — and I have never noticed the moniker "Millionaire Mary." I asked Meade if he'd ever heard that, and he said no. So Clift can't get 5 words into her column without hitting a blatantly false note. Scrolling down, I see the term comes from Burke herself, whom Clift interviewed:

Burke... was recruited to run for the Madison school board, a race that she won in 2012 with the help of $128,000 of her own money. “Millionaire Mary, they’re just using that,” she says of Republican efforts to denigrate her wealth. “I have been very clear that what I can put in is a fraction of what’s needed,” she says.

Republicans denigrate wealth?

Googling, I see the descriptor "millionaire" used occasionally in GOP headlines with her full name, e.g. "Millionaire Mary Burke Says More Money for Taxpayer Is 'Irresponsible,'" but that's quite different from having a standard nickname using just her first name, "Millionaire Mary," like "Typhoid Mary" (or the more political — and, incidentally, more phallocratic — "Tricky Dick" and "Slick Willy").

But here's an article from PolitiFact, last November, specifically about the use of political nicknames in the Wisconsin governor's race:

Tina Brown: "I mean, he'd be impeached by now for drones, if he was George W. Bush."

That was her off-topic outburst after Bill Maher said: "The Obama administration has been heavily targeting whistleblowers — true — and information activists. What can we do to hold the government accountable for this harsh crackdown?" (Maher was driving at the Aaron Swartz incident.)

And here's Eleanor Clift calling drones "a blessing."

Well, first of all, drones are here to stay. They are the 21st Century modern tool of war. And in many ways they are a blessing. Much better than bombers because they can be more effective and targeted than bomber planes just raining bombs down. With an enemy that is harbored in various places, in countries where we are not at war with the country, it’s the only way you can really get at them short of invading that country which we did and discovered that isn’t so hot. So I would say they are, they are a blessing. But, they bring all sorts of ethical and moral concerns, and there should be some sort of judicial review....