Welcome to Trail Guide, your daily run through the wilds of the 2016 presidential campaign. It's Thursday, Sept. 10, and this is what we're watching:
- Donald Trump insults Carly Fiorina in a Rolling Stone interview
- R.E.M. responds to the use of the band's music at an anti-Iran deal rally
- Jeb Bush will tout his tax plan in New Hampshire
- Hillary Rodham Clinton will speak at 'Women for Hillary' events in Columbus and Milwaukee
- It's Joe Biden's turn on the 'Late Show'
Amid all the worry about alienating Latino voters in 2016, the Times' Kate Linthicum reminds us that Latinos are far from realizing their power in electoral politics.