News Corp. likely needs family votes representing about 30 percent of the overall vote to succeed, The Wall Street Journal reported Monday. While some members of the Bancroft family have said they will vote in favour of the sale, others say that Murdoch's style would damage the journalistic integrity of Dow Jones's publications, especially The Wall Street Journal, its flagship newspaper.

When Elefante receives the signed voting agreements, he must inform the Dow Jones board of the results.

The Dow Jones board voted earlier this month in favour of Murdoch's takeover bid.