Today's installment of campaign-related news items from across the country.
* In one of the cycle's stranger moments, Jeb Bush's Right to Rise super PAC released a new video yesterday focused on Marco Rubio's boots, and tying them to some of the more problematic areas of the senator's record.
* A new national New York Times/CBS News poll shows Hillary Clinton leading Bernie Sanders, 48% to 41%. Sanders leads Clinton among younger voters by a roughly 2-to-1 margin.
* Ted Cruz has far fewer congressional endorsements than the other competitive GOP presidential candidates, but he's picked up a few this week from far-right U.S. House members. Reps. Paul Gosar (R-Ariz.), Alex Mooney (R-W.Va.), and Sam Johnson (R-Texas) each threw their support behind the Texas senator this week.
* Speaking of Cruz, in the new Washington Post/ABC News poll, the Texan has seen his favorability rating jump among Republicans nationwide. Among the top three GOP candidates, Cruz is now the most popular with the party's voters.
* Hillary Clinton picked up an endorsement yesterday from the United Food and Commercial Workers. The campaign emphasized the milestone: this is the 20th national union or labor alliance to formally support her candidacy.
* Speaking of Clinton, the former Secretary of State released a new ad late yesterday, emphasizing her support for President Obama's efforts to reduce gun violence.
* Perhaps feeling a little jittery about his re-election, a PAC supporting John McCain is going on the air this week, running television ads touting the senator as a national security expert. The incumbent faces a primary challenge, and assuming he prevails, Rep. Ann Kirkpatrick (D) awaits him in the fall.
* In Maryland's very competitive Democratic Senate primary, the Sierra Club has endorsed Rep. Chris Van Hollen's (D) campaign. The primary is April 26.
* And some White House hopefuls continue to struggle to qualify for every state's ballot. Vermont, part of the March 1 Super Tuesday, released its ballot this week, and Mike Huckabee did not qualify. Neither, by the way, did Jim Gilmore.