Today's installment of campaign-related news items from across the country.
* With both Democratic candidates vying for support from minority communities, it was of interest yesterday when the Congressional Black Caucus PAC formally endorsed Hillary Clinton.
* With time running out before the Republicans' South Carolina primary, former President George W. Bush will hit the campaign trail on Monday night in support of Jeb Bush. It will be the former president's first campaign appearance on behalf of his brother.
* Speaking of the Palmetto State, local GOP officials believe Trump's South Carolina ground game falls far short of his rivals', but Republicans believe he's likely to win the primary anyway.
* Home Depot co-founder Kenneth Langone, a Republican mega-donor, officially made the switch this week from Chris Christie to John Kasich. Langone will not, however, support the Ohio governor's super PAC, saying, "I don't give to super PACs anymore."
* And speaking of Kasich, the governor yesterday hired admaker and strategist Rex Elsass, who was part of Rand Paul's presidential campaign.
* Former Virginia Sen. Jim Webb, who quit his Democratic presidential bid fairly early on, announced yesterday that he's decided not to run as an independent. In a speech, the former senator said, "Theoretically it could be done, but it is enormously costly and time sensitive, and I don't see the fundraising trajectory where we could make a realistic run."
* Priorities USA Action, a pro-Clinton super PAC, has made a big radio ad buy in South Carolina, touting her connections to President Obama. The super PAC had intended to hold onto its money until the general election, though that's apparently no longer an option.
* Faced with the possibility that Rep. Todd Young (R-Ind.) did not file the necessary number of ballot signatures to run for the Senate, the National Republican Senatorial Committee is accusing the Indiana Democratic Party of "trying to deprive the voters of Indiana of legitimate choice." Young needed to submit 500 valid signatures; according to Democratic officials' hand-count, the Republican congressman submitted 498 -- which technically means he should be excluded. Yesterday, Young's primary rival, Rep. Marlin Sutzman (R-Ind.) also weighed in. Sutzman's campaign manager said in a statement, "Young's inability to gather sufficient signatures is a real concern to countless Republicans our team has spoken with."