He can't. He's all the problems with Clinton (too close to corporatism/Wall Street, too centrist to win over left-wingers) maximized. He's not going to be able to appeal to progressives in the primary, and if he wins the nomination he'll lose to Trump in the general election and help the GOP retain their majorities in the House and Senate.
Democrats need to realize that Clinton's popularity with white suburbanites and college grads was a one-off thing, and even then it cost the Democrats a lot of down ballot races. You shouldn't be trying to appeal to disenfranchised Republicans who vote. You should be trying to appeal to working-class voters and Millennials who typically DON'T vote and maximize turnout.
If Hillary Clinton of all people can win a Democratic primary, why shouldn't Booker be able to win? And the Sanders wing is clearly a minority of the Democratic primary electorate.
Exactly. Sanders supporters are important but it's not like they ("we" I guess) have veto power over the nominee.
We might not have veto power during a primary (I think this point is debatable), but we can certainly screw you during a general à la HRC.
