ZOMG the first option has pulled ahead by one now! 82-81. I am frankly shocked…I honestly had no idea it was a common word. In some places.
I am going to have to start another thread just for the people who think it’s a common word and ask them to indicate their region in the poll. hehehe
Nah. You need to start one about “carafes”. Really. 
Born and raised in N. Florida. I know the word, but I don’t remember when or where I learned it. Around here we all call them “veggie trays”. If they include things like pickles and olives, then it’s a “relish tray”.
Thank you Sunspace for confirming this is not a word used in Ontario. We eat vegetable platters all the time.
Searching Gmail I come up with:
From a friend:
From Bicks.ca:
From my son’s soccer league:
Search for “crudi” = ziltch.
Raised in TN, known crudites since I was a young adult, IIRC.
According to the Macmillian Dictionary, crudites is not one of the 7500 words that comprise 90% of the average American’s vocabulary. I don’t think that means it isn’t common, but it is a datapoint.
This is how I know the word. If I know it, doesn’t everybody?
Okay, fancy veggie platter. 
Ohio, never heard it before the other thread.
Live near Boston, don’t know where I picked it up. (I picked: know it, think it’s a common word)
Not only have I never heard this word before, but I would have been beaten up for using it in West Texas.
Counting both threads, we’ve managed to do about 8 total pages of discussion on “crudites” today. That’s pretty awesome, even for the Dope.
Wouldn’t one get beaten up for using any French-derived word in West Texas?
“French fries” was acceptable.
Aren’t they called freedom fries in Texas?
Dunno about now. I’m talking about my youth, back in prehistoric times.
Michigan. Never heard of it before seeing it in the other thread. Least Original User Name Ever told me he knew the word, but I have no idea where he picked it up.
I learned it as a kid, not at cocktail parties. Any family around us (lower middle class) described the vegetable tray at the holidays with this word.
Ontario, Canada. I live in a francophone community and still the word is rarely used, though widely understood.
But I find the use of this word in English pretentious and would be tempted to knock anyone who has the mind to do so. Just call it a goddamn platter.
Not all of these involved a sit-down meal. A number of them were just wine and hors d’oeuvres a short time before the ceremony/event/dance/whatever. We were expected to eat dinner before arriving at the reception.
I understand that. Just trying to give a possible explanation why so many people said they had never been to a cocktail party.