I would have to say that it depends. If you did very well in your major, compared to your overall GPA, it'll definately help. Also, if you've done worse during your early undergraduate years taking required classes, but did well towards the end of ur undergrad taking major classes, your upward trend in grades will help... but other than that, your overall GPA will weigh very heavily, and how well u performed in your major won't matter so much.