Today’s installment of campaign-related news items that won’t necessarily generate a post of their own, but may be of interest to political observers:

* In a national survey, Public Policy Polling shows President Obama tied with Mitt Romney in a hypothetical match-up, with each getting 45% support. The president leads Rick Perry in the poll, 49% to 43%, and leads Michele Bachmann, 50% to 42%.

* In Iowa, where voters have spent a fair amount of time getting to know the Republican presidential hopefuls, President Obama leads all of the leading GOP candidates by double digits in general-election match-ups.

* In Mississippi yesterday, Democrats nominated Hattiesburg Mayor Johnny DuPree as their gubernatorial nominee. DuPree’s nomination makes history — he’s the first major-party African-American candidate ever to win a gubernatorial nomination in Mississippi.

* In Nevada’s upcoming special election in the 2nd congressional district, a new Daily Kos/Public Policy Polling survey shows former state Sen. Mark Amodei (R) with a narrow lead over state Treasurer Kate Marshall (D), 43% to 42%.

* The right-wing Club for Growth is going after Republican Senate candidate Tommy Thompson in a new television ad, because Thompson endorsed a health care bill in the Senate that was an early version of the Affordable Care Act.

* In Hawaii, in something of a surprise, Rep. Colleen Hanabusa (D) announced she will run for re-election, rather than running for the open U.S. Senate seat.

* On a related note, Hanabusa will likely find herself in a 2010 re-match, with former Rep. Charles Djou (R) hoping to make a comeback.

* And in Michigan, the latest EPIC-MRA poll shows Romney leading the GOP presidential field with 32%, followed by Perry at 17% and Bachmann at 12%. Romney’s 15-point lead is obviously sizable, but given his history with the state — his father was governor of Michigan — many expected his lead to be even bigger.

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Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.