Today's installment of campaign-related news items from across the country.
* In Iowa, a new Quinnipiac poll shows Hillary Clinton maintaining a fairly comfortable lead over Bernie Sanders, 51% to 42%, which is largely the same as the results from a month ago. Martin O'Malley remains a distant third with 4%.
* NBC News' Katy Tur noted last night that Donald Trump's campaign is now requiring reporters to have "bathroom escorts at his rallies."
* New Hampshire's Ballot Law Commission voted unanimously yesterday to dismiss a challenge to Bernie Sanders' ballot eligibility. The chairman of the state Democratic Party acknowledged that Sanders is technically an Independent, but the state and national parties recognize him as a Dem and support him competing in the Democratic primary.
* In Maryland's competitive Democratic Senate primary, the latest Baltimore Sun/University of Baltimore poll shows Rep. Chris Van Hollen leading Rep. Donna Edwards, 45% to 31%. If Rep. Elijah Cummings enters the contest, he would lead a three-way affair, but Cummings has not yet announced his plans.
* The chairman of the Republican Party of Minnesota apologized yesterday after a local GOP affiliate said Minnesota Democrats have a "negro problem."
* And Bloomberg Politics recently had an interesting piece noting that President Obama will maintain an "aggressive" campaign schedule in 2016. The article added, "In addition to seeking to turn out voters in the presidential race, Obama’s team anticipates that he also will campaign for Senate and House candidates in 2016, according to a Democratic strategist familiar with the administration’s planning who asked for anonymity."