Today's installment of campaign-related news items from across the country.
* It's primary day in Florida and Arizona. Pay particular attention to Sen. John McCain's (R-Ariz.) primary, the U.S. Senate primaries in both parties in Florida, and Rep. Debbie Wasserman Schultz's (D-Fla.) House race.
* Former KKK leader David Duke launched a robocall this week, asking voters to support his Senate campaign in Louisiana and Donald Trump's presidential campaign. Team Trump has disavowed the message.
* First, Marco Rubio said he wouldn't seek re-election to the Senate. Second, Rubio said he wants a second term after all. This morning, Rubio complicated matters further, refusing to say whether he'd serve a full term if re-elected.
* Mark Burns, a pro-Trump pastor and campaign surrogate, apologized yesterday after tweeting a cartoon of Hillary Clinton in blackface.
* Bernie Sanders yesterday emailed his large mailing list, encouraging his backers to support four U.S. Senate candidates in tough races: Katie McGinty in Pennsylvania, Maggie Hassan in New Hampshire, Ted Strickland in Ohio, and Catherine Cortez Masto in Nevada.
* On a related note, one of those four appears to be in trouble: Ohio's Ted Strickland (D), once thought to be well positioned to defeat incumbent Sen. Rob Portman (R), has struggled of late. This week, the DSCC and Senate Majority PAC delayed ad buys in the Buckeye State that had been scheduled to run on Strickland's behalf.
* Add Charles Fried, Ronald Reagan's solicitor general, to the list of Republicans supporting Clinton's candidacy.
* Poll results from Emerson College, released yesterday, found Clinton leading Trump by 5 points in Michigan, 3 points in Pennsylvania, and tied in Ohio.
* The Clinton campaign has reached out to the ghostwriter behind Trump's "The Art of the Deal" in preparation for the upcoming debates.
* And Meg Whitman, the Republican Party's gubernatorial candidate in California in 2010, will be in Denver today, campaigning in support of Hillary Clinton.