vital evidence
vital information
vital clue

Vital information is often not available until after an election.

If you'll give me your vital information, I'll try to get them for you.

Here is the vital information for owners who want to go.

So we are also making paper copies of the most vital information.

"Do not in your just anger give away vital information."

It was the only way they were likely to return to the League with their fresh and vital information.

He'll give us much more vital information than our current consultant.

On this point you have given us vital information and I simply want to add my own personal testimony.

Some worry that the company may have become too central in an age when so much vital information is available online.

But in doing so you kept vital information from me.