Today's installment of campaign-related news items that won't necessarily generate a post of their own, but may be of interest to political observers:
* Sen. Rand Paul (R-Ky.) began selling "Filibuster Starter Packs" to supporters yesterday for $30, raising questions about the sincerity of his 10-hour stunt on the Senate floor this week.
* Rick Santorum is not at all pleased with Fox News' debate criteria, which may exclude him from participating. The former senator noted, among other things, that national polling is a poor standard -- four years ago, he won the Iowa caucuses despite poor showings in national polls.
* Sen. Ted Cruz's (R-Texas) presidential campaign now has four endorsements from Republican members of Congress, and all four are from the senator's adopted home state. Among the latest supporters announced yesterday: Rep. Louie Gohmert (R-Texas).
* While several Republican presidential candidates have struggled of late to finesse their position on the war in Iraq, retired right-wing neurosurgeon Ben Carson took a position that breaks with GOP orthodoxy: "I've said definitively that I was never in favor of going into Iraq."
* Scott Walker told an audience yesterday that Americans have reason to fear immigrants: "There's a good number from Indonesia, there are from Morocco, and other places around the world, many of whom aren't looking for work in the United States. They've got other motives and we need to wake up to that."
* In a bit of a surprise, Jeb Bush seemed to suggest at a campaign event yesterday that border security is better under President Obama than it was during his brother's tenure.
* In the state of Washington, PPP shows that Hillary Clinton already leads her Republican rivals by double digits in hypothetical 2016 match-ups. Among Washington Republicans, Ben Carson, oddly enough, appears to be leading the GOP field.
* And some of the folks who worked for Carly Fiorina's Senate campaign are going out of their way to make clear how little interest they have in her presidential campaign. One former aide said this week, "I'd rather go to Iraq than work for Carly Fiorina again."