Jeb leads the GOP pack, according to brand-new national NBC/WSJ poll… Who makes that first debate, per the poll? And who gets left off?… Full NBC/WSJ poll comes out at 6:30 pm ET… What dynasty issue?… GOP candidates divided over South Carolina’s Confederate flag… And Rick Perry on how NOT to talk about the Charleston shooting. FIRST THOUGHTS *** Jeb leads the GOP pack: A brand-new national NBC/WSJ poll finds Jeb Bush leading the crowded Republican presidential field, with 22% of GOP primary voters saying he’s their first choice. He’s followed by Scott Walker at 17%, Marco Rubio at 14%,...