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:
* Wisconsin Gov. Scott Walker (R) raised an astonishing $13 million in just three months for his recall campaign. That's almost on par with some presidential candidates.
* President Obama's campaign unveiled its second television ad this morning, which makes use of Mitt Romney's Swiss bank account. The spot will air in Ohio, Iowa and Virginia, beginning today.
* Romney will campaign with Rudy Giuliani today, which I'm sure has nothing to do with the anniversary of the bin Laden killing, and will feature no references to 9/11.
* The political action committee backing Sen. Richard Lugar in Indiana's Republican U.S. Senate primary has decided to give up with just a week to go. State Treasurer Richard Mourdock now appears favored to win.
* Newt Gingrich has announced that he will announce his departure from the presidential race.
* Though the Obama campaign voluntarily chooses to disclose all of its fundraising bundlers, the Romney campaign has decided to keep bundlers' names secret.
* And in Massachusetts, Sen. Scott Brown (R) has decided to make a campaign issue out of Elizabeth Warren's Native American heritage. I'm not sure why or what point voters are supposed to take away from this, but Brown's team seemed pretty worked up yesterday.