Today's installment of campaign-related news items from across the country.
* Rep. Darrell Issa (R-Calif.), a prominent Marco Rubio booster, tried to defend the Florida senator against criticism yesterday from Chris Christie. As part of the pushback, Issa said the New Jersey governor is "a lot overweight."
* If John Kasich struggles in today's New Hampshire primary, his campaign is likely finished, so it was of interest yesterday when the Ohio governor's super PAC made six-figure ad buys in Nevada and South Carolina -- the next two states holding nominating contests.
* On a related note, Christie would presumably be in big trouble if he fares poorly tonight, but his campaign released a schedule of upcoming Christie events in South Carolina, suggesting the governor intends to stick around for a while.
* Speaking of Christie, two of Mitt Romney's closest advisers decided to become campaign contributors to the New Jersey governor after seeing his performance in Saturday night's debate.
* Marco Rubio continues to rack up endorsements from Capitol Hill, where Sen. Deb Fischer (R-Neb.) threw her support to the Florida senator yesterday.
* The Iowa Democratic Party conducted a review of last week's caucus results, and though it discovered "errors in the results from five precincts," it concluded that Hillary Clinton still narrowly defeated Bernie Sanders.
* Hoping to avoid a difficult re-election race, Rep. Randy Forbes (R) has decided to move to Virginia's 2nd congressional district, where Rep. Scott Rigell (R) is retiring.