Today's installment of campaign-related news items from across the country.
* It's common for presidential campaigns to rely on direct mail to reach voters in Iowa and New Hampshire, but Jeb Bush's super PAC has begun sending small video players showing a pro-Bush documentary to voters in the Granite State. It looks like the kind of mailing that must cost a fortune.
* Speaking of Jeb, the former governor has reached the point at which he's doing exclusive interviews with Breitbart, a right-wing website, in order to criticize Marco Rubio on immigration.
* Bernie Sanders hosted a Martin Luther King Day rally in Birmingham, Alabama, and enjoyed a very strong turnout. Alabama's Democratic primary is March 1 -- just a couple of days after the South Carolina primary.
* The Human Rights Campaign, one of the nation's largest and most prominent advocacy organizations in support of LGBT Americans, officially endorsed Hillary Clinton's campaign this morning.
* Rand Paul said last week he intends to spend "every waking hour" trying to stop Donald Trump from winning the Republican nomination. The senator added, however, that he would support Trump if he does prevail in the primary process.
* Speaking of Rand Paul, Kentucky Democrats have not yet recruited a credible challenger for this year's Senate race. Dems expected to rally behind state Auditor Adam Edelen (D), but he lost a close re-election race two months ago.
* In still more Kentucky news, Gov. Matt Bevin (R) has scheduled a March 8 special elections to fill four vacancies in the state House. The results could tip the balance of power in the chamber.
* And in Colorado, where Republicans have struggled to recruit a top-tier challenger to take on Sen. Michael Bennet (D), the GOP field is suddenly very crowded. Just over the last couple of weeks, two state legislators and a Colorado-based businessman have kicked off statewide campaigns.