Christopher Steele, a former British intelligence officer, in London in March.

By KENNETH P. VOGEL, New York Times  OCTOBER 24, 2017

WASHINGTON — The presidential campaign of Hillary Clinton and the Democratic National Committee paid for research that was included in a dossier made public in January that contained salacious claims about connections between Donald J. Trump, his associates and Russia.

A spokesperson for a law firm said on Tuesday that it had hired Washington-based researchers last year to gather damaging information about Mr. Trump on numerous subjects — including possible ties to Russia — on behalf of the Clinton campaign and the D.N.C.

The revelation, which emerged from a letter filed in court on Tuesday, is likely to fuel new partisan attacks over federal and congressional investigations into Russia’s attempts to disrupt last year’s election and whether any of Mr. Trump’s associates assisted in the effort.

The president and his allies have argued for months that the investigations are politically motivated. They have challenged the information contained in the dossier, which was compiled by a former British spy who had been contracted by the Washington research firm Fusion GPS.

The letter that was filed in court said that Fusion GPS began working for the law firm, Perkins Coie, in April 2016. Written by the firm’s managing partner Matthew J. Gehringer, the letter said that Fusion GPS had already been conducting the research “for one or more other clients during the Republican primary contest.”

Perkins Coie was paid $12.4 million to represent the Clinton campaign and the D.N.C. during the 2016 campaign, according to filings. The role of the Clinton campaign and the national party in funding the research for the dossier was first reported on Tuesday by The Washington Post.

At the time that Democrats began paying for the research, Mr. Trump was in the process of clinching the Republican presidential nomination, and Ms. Clinton’s allies were scrambling to figure out how to run against a candidate who had already weathered attacks from Republican rivals about his shifting policy positions, his character and his business record. READ it HERE