Shane Goldmacher for Politico:

cott Walker has begun selling access to his email list to pay off his leftover presidential debt, renting out the email addresses of hundreds of thousands of supporters to former rivals, including Marco Rubio, John Kasich, Ted Cruz and Ben Carson. The solicitations arrive as if Walker’s donors magically landed on the lists of his old foes, as they plead for cash for themselves, linking to their own campaign sites.
But there’s a catch.

While it never says so in the emails from his old foes, or anywhere, the money that donors give isn’t necessarily all going to whichever smiling candidate is pictured on the site and writing the email. That is because Walker’s committee has struck secret deals with at least some of his old competitors to split the proceeds — unbeknownst to those doing the giving.