NEW YORK (Reuters) - JPMorgan Chase & Co appears to have defeated a shareholder proposal to split the roles of Chairman and Chief Executive Jamie Dimon, the New York Times reported on Tuesday.

The Times, which cited people familiar with a preliminary vote count, said the final outcome could still change and any margin of victory is still unclear.

Three members of the board's risk committee who were criticized by the proxy advisory firm Institutional Shareholder Services also won support from shareholders in the early tally, the Times said.

Dimon and the board have been locked in a battle with some investors and proxy advisory firms that argue the bank lacks strong corporate governance, in the aftermath of its $6.2 billion in losses from a bad derivatives trade last year.

A final tally will be announced at JPMorgan's annual shareholder meeting in Tampa, Florida, later Tuesday morning. JPMorgan declined to comment on the Times report.

(Reporting by Lauren Tara LaCapra; Editing by Gerald E. McCormick and Jeffrey Benkoe)