Former vice president scores major victory in must-win state, as front-runner Senator focuses on taking big enough delegate lead on Super Tuesday to all but clinch nomination

Jeff Jones, who is often asked to pose for photos at political rallies for the Democratic presidential hopeful, says it's an 'accident of nature' the two resemble each other

Sixty percent of respondents -- and 75% of Jewish respondents -- say the Vermont senator is 'not too religious' or 'not at all religious'

Least religious candidate in the Democratic primary has recently touted his Jewish identity as linked to his commitment to combat discrimination

Reform, Conservative, Orthodox religious leaders call Israel lobby 'one of last remaining vehicles in that seeks to bring Americans from across political spectrum together'

Pile-on at Democratic primary debate reflects the Independent senator from Vermont's position in the race

After letting independent senator get by without real scrutiny, rivals and action groups are weighing whether big-money campaigns against Sanders are too little, too late

With fear among Democratic establishment that self-described democratic socialist could gain significant lead from S. Carolina, some show their lines of attack in digital, TV ads

MSNBC anchor had likened Democratic Senator's landslide Nevada win to German army overrunning France during World War II, raising hackles

Rival candidates in US Democratic primaries try to slow front-runner's momentum ahead of South Carolina vote and Super Tuesday, with nobody prepared to drop out of race yet