WASHINGTON — The Democratic National Committee purchased a donor list from a political action committee backing ex-Vice President Kamala Harris for $6.5 million late last year — even as the national party’s main fundraising arm remained more than $16 million in debt . The Fight for the People PAC received $3.5 million from the DNC on Nov. 28 and another $3 million on Dec. 29, according to the latest Federal Election Commission filings that were first reported by The New York Times over the