Today's installment of campaign-related news items from across the country.
* Hillary Clinton posted a message to supporters on Facebook overnight, telling them she's sorry for the controversy surrounding her email-server management.
* In South Carolina, one of the key early nominating states, a new Public Policy Polling survey shows Donald Trump leading the Republican presidential field with 37%. Ted Cruz is second with 21%, while Jeb Bush and Ted Cruz are tied for third with 6% each. Note, Bush's and Cruz's combined support, times three, doesn't quite match Trump's backing in the poll.
* The same South Carolina survey found Hillary Clinton with a big lead in the Democratic race. She enjoys a 30-point advantage over Vice President Biden, 54% to 24%. Bernie Sanders appears to be struggling in South Carolina -- he's third with 9%.
* Speaking at Brookings Institution this morning, Clinton praised the international nuclear agreement, and looked ahead to enforcement. “By now, the outcome of the deal in Congress is no longer in much doubt. So we’ve got to start looking ahead to what comes next: enforcing it, deterring Iran and its proxies, and strengthening our allies,” Clinton said. She added, “I will not hesitate to use military force if Iran attempts to obtain a nuclear weapon.”
* Rick Perry's presidential campaign moved one step closer to permanently turning the lights off yesterday, shutting down its headquarters in South Carolina.
* CNN moved the starting time for its prime-time debate next week from 9 p.m. to 8 p.m. eastern. The so-called kids-table debate will wrap up 15 minutes prior. The event(s) will be held a week from tonight.
* Former Sen. Mary Landrieu, a conservative Louisiana Democrat, still has $150,000 left in her campaign fund, and she plans to spend some of it to help some of her former colleagues in their re-election bids. Despite Republicans ending her career, Landrieu is even prepared to help Sens. Rob Portman (R-Ohio) and Susan Collins (R-Maine).
* And former Rep. Artur Davis of Alabama was a Democrat. In 2010, he became a Republican and ran unsuccessfully for governor. In 2012, he even appeared at the Republican National Convention. This year, however, Davis has switched back to the Democratic Party and is running for office once more.