If the candidate had more power, she would set up interviews and force the employers to impress her.
Of course, that scenario happens only in extreme edge cases. Even in a booming economy with a shortage of workers, John Doe is not going to be pursued aggressively to fill the Senior Marketing Manager role.
This makes intuitive sense: employers have a ton of money, so people come to them.
Right now I have a client who needs to hire truck drivers and can't do it fast enough. I asked him what he'd done to make his company the most attractive (pay, technology, perks, etc.). He said he's done nothing.