1) It's likely that most of us not living in Wisconsin first heard of Scott Walker when he took on his state's public-sector labor unions, a controversial fight that nearly cost him his job. In an attempt to resurrect his wheezing presidential campaign, Mr. Walker announced on Monday he'd continue that fight as president, pushing through a national right-to-work law and disbanding the National Labor Relations Board. It's questionable whether either of those goals is workable, but the bigger question is this: Do enough Republican voters consider labor policy to be an important campaign issue for this to turn around Mr. Walker's decline?
2) One of the more interesting sideshows in Wednesday's Republican debate will be Donald Trump having to look Carly Fiorina in the eye after making comments about the electability of "that face." Ms. Fiorina has done an impressive job of countering the ridiculous attack from Mr. Trump, even making a campaign video that pokes back at the GOP frontrunner.
3) Could the Republican primary use another billionaire businessman? Pittsburgh native Mark Cuban says he's not interested in running, but if he did, he would beat Hillary Clinton and "crush" Mr. Trump.
4) The list of people who have been able to get under Mr. Trump's skin so far is pretty short: 1) Megyn Kelly and 2) Hugh Hewitt. Ms. Kelly irritated the Trumpernator so badly during the Fox News debate that the candidate insinuated that she was menstruating. And Mr. Trump gets another go-round with Mr. Hewitt in tomorrow night's CNN debate; when the two last spoke, Mr. Trump objected to the "unfair" questions from the "third-rate radio announcer."
5) One of Rick Perry's biggest benefactors wants his money back, now that the former Texas governor has dropped out of the Republican race. Maybe Mr. Perry could sell his now-vacant seat on stage at to Jim Gilmore to raise a little money.