I'm applying for several summer schools, workshops, and travel funds. I've also applied for a few fellowships. Almost all of these have extended their deadlines for application submission and/or supporting material submission. I've completed (or plan to complete) all of the applications before the original deadlines.
My questions are:
What are the typical reasons that deadlines are extended?
Do you think it'll increase my chances for admittance since I submitted my application before the original deadlines?