So as discussed in other topics, the CNBC criteria are as follows:
"National polls will be used to determine a candidate's eligibility and placement on the stage. To be eligible to appear in either segment, a candidate must have at least 1% in any one of the methodologically sound and recognized national polls conducted by: NBC, ABC, CBS, Fox, CNN and Bloomberg, released between September 17, 2015 and October 21, 2015.
To appear in the 8pm debate a candidate must have an average of 3% among these polls. The polls will be averaged and will be rounded up to 3% for any candidate with a standing of 2.5% or higher. Candidates who average below that will be invited to the 6pm debate."
http://www.cnbc.com/2015/09/30/cnbc-republican-debate-criteria.html
(Its not explicitly said if a newer poll would "delete" an older, in case that any said poll conducter releases 2 polls in the time phrase. My take is that both polls would count, as it has been the case in the CNN debate)
That means that as of now, the following polls will be taken into account:
CNN 9/20 - FOX 9/23 - Bloomberg 9/24 - NBC 9/27 - CBS 10/11
The current average of these polls:
In prime time debate:
1. Trump 23.8
2. Carson 17.8
3. Fiorina 10.4
4. Rubio 9.4
5. Bush 8.4
6. Cruz 6.6
7. Kasich 3.6
-- Christie 3.6
9. Huckabee 3.2
10. Paul 3.0
in 2nd tier:
11. Santorum 0.8
12. Jindal 0.4
13. Pataki 0.2
Not qualified at all:
14. Gilmore 0.0
-- Graham 0.0
Note that ABC hasnt released a poll yet in the timeframe, and they used to have the best results for Paul in the last months!

7th place is doable still