Is it advisable to send a proposal to an Upwork job if all the invites the clients sent have been answered?

[Btaliat]

I understand the feeling when you just want to get clients by all means. You may want to do all what you have at your disposal to make it happen. Sometimes, you may be tempted to send a proposal to a clients even when there are some freelancers attending to the clients already. The fact is that such a proposal may even be rejected. It is not advisable at all to be sending proposals to clients have had other freelancers interviewed. What do you think about this?