WRAPUP 11-Clinton gives herself a loan, vows to fight on

* Obama campaign sees finish in sight

* Clinton promises to keep fighting

* Clinton loans campaign $6.4 million (Adds Clinton, Feinstein quotes)

By John Whitesides, Political Correspondent

WASHINGTON, May 7 (Reuters) - Barack Obama took a commanding lead in the Democratic presidential race on Wednesday, but Hillary Clinton vowed to fight on after loaning her campaign $6.4 million.

Obama's big win in North Carolina and Clinton's slim victory in Indiana widened his advantage in their battle for the right to face Republican John McCain in the November presidential election with just six contests remaining.

The results left the cash-strapped Clinton campaign with little chance to halt Obama's march to the nomination. But the New York senator brushed off calls to drop out of the race.

"I'm staying in this race until there is a nominee," Clinton told reporters after a campaign rally in Shepherdstown, West Virginia, which holds a primary on Tuesday.

At a Washington fundraising event to honor women, she said she had been counted out before. "I am staying in this race," she said. "Too many people have fought too hard to see a woman continue in this race."