just seven candidates. this is happening as cnn has new polling among democrats. former vice president joe biden, senator bernie sanders and senator elizabeth warren holding on to the three top spots. cnn politics reporter editor at large, chris cillizza here with new power ranks. what do you have? >> every two weeks going through and rank the ten most likely candidates to become nominees. michael bloomberg not in this debate and probably won't qualify for any if dnc keeps criteria the way they are. he is on track to spend more than $1 billion on television. a few polls have him at 7%. remarkable given he's only been in the race a little while. everyone else clinging on. andrew yang will stay in. cory booker may not. steyer is rich, castro, maybe not. may slim down more.