A trial will be held next month to determine the fate of the Musk deal.

Elon Musk HP Social GETTY sub

A majority of shareholders voted in favor of accepting Musk's $54.20-a-share offer to acquire the social-networking company. In April, Musk made a bid that he wants to withdraw. The investors were encouraged to approve the deal by the board. The company's shares are trading below Musk's proposed price and were not changed by the vote.

Polls opened for 3 minutes at the shareholder meeting. The shareholders could vote for several weeks before the meeting.

The consummation of the deal is not certain. In July, Musk claimed that he was canceling the agreement because he was misled about the size of the company's user base. The Delaware court ordered Musk to complete the acquisition. Musk responded by counter-suing the company.

Lawyers for the two companies have been fighting over witnesses, evidence and even the court date. The trial is scheduled for the week of October 17th.

At the end of August, a former senior Twitter executive-turned-whistle-blower came forward, and Musk sought to bolster his case. According to Peiter "Mudge" Zatko, the company is in violation of multiple regulatory requirements and has given misleading information about the number of bot on its service.

According to Zatko, he was fired for poor performance.

(Updates with meeting timing in the third paragraph)