Aiming to score a point five days before the important New Hampshire primary, the former Secretary of State last night questioned whether the Vermont Senator's ambitious proposals were viable.

Watched nationwide during prime-time, the clash between the two Democratic leaders at times went ugly, while at a few times they were seen praising each other.

Sanders, 74, said Clinton cannot claim to be both a moderate and a progressive, criticising her for raising USD 15 million from Wall Street.

Trailing massively behind Sanders in the latest opinion polls of New Hampshire primary, 68-year-old Clinton accused Sanders of a 'very artful' smear.

"Enough is enough," Clinton said. I don't think these attacks are worthy of you."

"Senator Sanders has said he wants to run a positive campaign. I've tried to keep my disagreements over issues, as it should be," she said in the debate.

Sanders said Clinton represent the establishment. "What being part of the establishment is, in the last quarter, having a super PAC that raised USD 15 million from Wall Street, that throughout one's life raised a whole lot of money from the drug companies and other special interests," he alleged.

While the contest was ultimately called for Clinton —with 49.9 percent of the delegate count to Sanders' 49.6 percent — Sanders's camp is going precinct to precinct rechecking the results.

Latest News from World News Desk