Today's installment of campaign-related news items from across the country.
* At this point four years ago, 54% of the campaign ad spending in battleground states came from President Obama's campaign, while 46% campaign from Mitt Romney's campaign. Now, Hillary Clinton is responsible for 100% of the ad spending in those same states, compared to Donald Trump's 0%.
* Trump told NBC News over the weekend, "It would be nice if the Republicans stuck together." He added, however, that GOP backing isn't necessary: "I can win one way or the other."
* Bernie Sanders wants to scrap superdelegates and open up Democratic nominating contests to Republican and independent voters. Over the weekend, the Congressional Black Caucus said it intends to fight against both of these proposed changes.
* Trump announced over the weekend that if he were a British citizen, he'd favor Britain leaving the European Union. Those rallying against the "Brexit" are no doubt delighted to have such an unpopular figure on the opposite side.
* Sen. Ron Johnson (R-Wis.) is the latest Republican to get caught up in an awkward conversation about "supporting" Trump vs. "endorsing" him.
* On a related note, the latest Marquette poll in Wisconsin shows former Sen. Russ Feingold (D) leading Johnson, 51% to 42%.
* Democratic donors "in the financial services industry" are reportedly urging Clinton not to choose Sen. Elizabeth Warren (D-Mass.) as the party's vice presidential candidate.
* Add Maryland Gov. Larry Hogan (R) to the modest list of Republican elected officials who refuse to support Trump's candidacy.
* And at a campaign event over the weekend, Trump assured an audience of supporters that he can name each of the world's regions. I'm skeptical that he actually could, but either way, it's an odd thing to brag about.