7 questions heading into 10-candidate Democratic debate

By STEVE PEOPLES
WASHINGTON — And then there were 10.
The Democratic Party’s strongest presidential contenders — according to polls and fundraising, at least — meet on the same debate stage for the first time Thursday night.
The lineup in Houston will be different but the dynamic familiar: Former Vice President Joe Biden will fight to preserve his front-runner status as a crowded stage of lower-tier candidates scrap for attention and momentum any way they can. Opportuniti