Over the years, I’ve shared lots of political humor from the late-night talk shows. Much of this humor is left leaning, but I can appreciate good jokes even if they’re at my expense. In recent months, though, I’ve speculated that there’s been a shift away from Obama, especially on the part of Jay Leno (see here, here, and here). Well, it seems that I was right in sensing a change. Here’s a report from Fox News about a new study. A study of gags by late-night comics during the first half of the year found an abrupt change from 2012. Now Obama and Democrats are providing...