Musk's star power will likely draw much attention to event, said Charles Elson, founding director of the Weinberg Center for Corporate Governance at the University of Delaware. "He's a well-known individual in the middle of all this, so it will increase the interest in voting and could have a big impact," Elson said.
Although Twitter on Friday adopted a shareholder rights plan to defend itself against Musk, Elson said its impact on the voting might only be to make proxy advisers, which tend to frown on such so-called "poison pills," more skeptical of management.
Twitter faces five shareholder proposals, all opposed by management, dealing with topics drawing much investor attention.