Only Directors and CEO's can start a vote.
You need the following to happen.
An alt or yourself in the Corporation.
Make sure your alt has any role (Because any director or the CEO can kick you out instantly, even if the vote is currently passing)
Bride a Director to start a vote to make you CEO, make sure the vote is for JUST 1 day otherwise you'd be kicked out
Hold out for the timer to expire.
Small problem though the corp has 24 hours to move all their assets to personal hangers.
If you're looking for a Corp that has had a mutual hostile take over look at my corp history. Keepers of the Holy Bagels had a semi-hostile take over. Lord 2evil offered to buy corp shares from the CEO also saying he would buy all the directors shares as well. He got himself into a director position in which he got some shares for that (Basically brought himself directorship). He then spoke to the CEO in which he said he would buy the entire corp. The CEO sold his shares in which he then had 55% of the corps shares. He then created and past a vote to create 5000% more shares totally diluting the Directors shares.
Needless the say the corp tried to run on for a month or two but ultimately failed in the end.
There is a post on COAD about it just look for "Keepers of the Holy Bagel"