Today's installment of campaign-related news items from across the country.
* In New Hampshire, the latest Fox News poll shows Bernie Sanders leading Hillary Clinton, 50% to 37%, while the latest NBC News/Wall Street Journal/Marist poll shows a tighter race, with Sanders ahead, 50% to 46%.
* The NBC poll also found a very close Democratic race in Iowa, where the latest survey shows Clinton up by just three points, 48% to 45%.
* Clinton has taken a keen interest in the water crisis in Flint, Michigan, issuing a statement this morning describing the scandal as "extremely concerning," adding, "No parent should have to worry that their kids' water isn't safe."
* Speaking of Clinton, the former Secretary of State picked up endorsements over the weekend from former Rep. Gabby Giffords and her husband, astronaut Mark Kelly.
* Will the Senate make clear that Ted Cruz is eligible for the presidency? According to Senate Majority Leader Mitch McConnell (R), who has clashed repeatedly with the Texas Republican, the chamber intends to stay out of this.
* In the meantime, Donald Trump continues to invest considerable energy into the misguided line of attack on Cruz's birthplace.
* To the surprise of no one, Sen. James Inhofe (R-Okla.), a.k.a. "Senator Snowball," announced his support for Marco Rubio's campaign over the weekend. Among all Senate Republicans, Rubio is now tied with Jeb Bush with four endorsements each.
* Speaking of Senate endorsements, Ohio's Rob Portman (R) has thrown his backing to his home-state ally, Ohio Gov. John Kasich (R).
* Nearly all of Chris Christie's focus in recent months has been on New Hampshire, but the governor's campaign is now beginning to buy airtime in South Carolina, which hosts its primary just 11 days after New Hampshire's.
* And according to the White House chief of staff, President Obama will not make an endorsement in the Democratic nominating contest until after the nominee is clear.