www.nytimes.com—The Sanders-Buttigieg attacks grow, and a Biden ad gets sarcastic. This is your morning tip sheet.
Manchester Divided: A political history in 3 New Hampshire primaries. If it is difficult to calculate the impact that a single primary can have on the trajectory of a nation, it was even harder to gauge a primary’s significance before the 1970s, when their results were so loosely tied to how candidates were nominated at party conventions. So it’s important to consider those old contests [