Yglesias thinks Hillary should pander to the Berners to win Congress. This makes no demographic sense whatsoever. Bernie's voters are relatively unimportant in retaking Congress - the northern student vote and the educated middle class white male vote at the core of his support is already concentrated in Blue districts. Hillary's core constituencies - minorities, poor and working class voters, women - are key to winning congress.
Granted, there are some Wonks in Georgia. But there are a lot more of Hill's core constituents who we just need to get out.