Will Dennis Quaid’s first foray into series television bring big ratings? Will Vegas be a success or end up being cancelled like so many other newbie shows? Watch the ratings to find out.

Vegas typically airs on Tuesday nights at 10pm on CBS. The cast also includes Michael Chiklis, Jason O’Mara, Carrie-Anne Moss, Sarah Jones, and Taylor Handley. There are 22 21 episodes.

Below are the TV show’s ratings for the 2012-13 season, the best way to tell if Vegas will be cancelled or renewed for season two.

These figures will be updated as the weeks progress so be sure to bookmark and return to this page:

Final season averages: 1.5 rating in the 18-49 demographic with 9.75 million total viewers.

Episode 01-21: Friday, 05/10/13
0.9 in the demo (0% change) with 7.20 million (-2% change).
Season averages: 1.48 in the demo with 9.75 million.

UPDATE: CBS has cancelled Vegas after one season of 21 episodes.

Episode 01-20: Friday, 05/03/13
0.9 in the demo (-10% change) with 7.38 million (-2% change).
Season averages: 1.51 in the demo with 9.88 million.

Episode 01-19: Friday, 04/26/13
1.0 in the demo (+100% change) with 7.50 million (+74% change).
Season averages: 1.54 in the demo with 10.01 million.

Episode 01-18: Saturday, 04/20/13 (fast affiliate ratings)
0.5 in the demo (-38% change) with 4.32 million (-40% change).
Season averages: 1.57 in the demo with 10.15 million.

Episode 01-17: Friday, 04/12/13
0.8 in the demo (-11% change) with 7.20 million (-6% change).
Season averages: 1.63 in the demo with 10.49 million.

Episode 01-16: Friday, 04/05/13
0.9 in the demo (-40% change) with 7.67 million (-19% change).
Season averages: 1.68 in the demo with 10.70 million.

Episode 01-15: Tuesday, 02/19/13
1.5 in the demo (0% change) with 9.52 million (-7% change).
Season averages: 1.73 in the demo with 10.90 million.

Episode 01-14: Tuesday, 02/05/13
1.5 in the demo (-21% change) with 10.25 million (-9% change).
Season averages: 1.75 in the demo with 11.00 million.

Episode 01-13: Tuesday, 01/29/13
1.9 in the demo (+19% change) with 11.23 million (0% change).
Season averages: 1.77 in the demo with 11.06 million.

Episode 01-12: Tuesday, 01/15/13
1.6 in the demo (0% change) with 11.27 million (+3% change).
Season averages: 1.76 in the demo with 11.04 million.

Episode 01-11: Tuesday, 01/08/13
1.6 in the demo (0% change) with 10.92 million (+11% change).
Season averages: 1.77 in the demo with 11.02 million.

Episode 01-10: Tuesday, 12/18/12
1.6 in the demo (+7% change) with 9.82 million (-5% change).
Season averages: 1.79 in the demo with 11.03 million.

Episode 01-09: Tuesday, 12/11/12
1.5 in the demo (-6% change) with 10.33 million (+11% change).
Season averages: 1.81 in the demo with 11.17 million.

Episode 01-08: Tuesday, 11/27/12
1.6 in the demo (-11% change) with 9.35 million (-8% change).
Season averages: 1.85 in the demo with 11.27 million.

Episode 01-07: Tuesday, 11/20/12
1.8 in the demo (+13% change) with 10.12 million (-3% change).
Season averages: 1.89 in the demo with 11.55 million.

UPDATE: CBS has trimmed the episode order to 21 installments.

Episode 01-06: Tuesday, 11/13/12
1.6 in the demo (-6% change) with 10.41 million (-3% change).
Season averages: 1.90 in the demo with 11.78 million.

Episode 01-05: Tuesday, 10/30/12
1.7 in the demo (+6% change) with 10.75 million (-1% change).
Season averages: 1.96 in the demo with 12.06 million.

Episode 01-04: Tuesday, 10/23/12
1.6 in the demo (-20% change) with 10.8 million (-8% change).
Season averages: 2.02 in the demo with 12.39 million.

UPDATE: CBS has ordered nine additional episodes, bringing the season total to 22.

Episode 01-03: Tuesday, 10/09/12
2.0 in the demo (0% change) with 11.78 million (-3% change).
Season averages: 2.17 in the demo with 12.91 million.

Episode 01-02: Tuesday, 10/02/12
2.0 in the demo (-20% change) with 12.11 million (-19% change).
Season averages: 2.25 in the demo with 13.48 million.

Episode 01-01: Tuesday, 09/25/12
2.5 rating in the 18-49 demographic with 14.85 million total viewers.
Season averages: 2.50 in the demo with 14.85 million.

Compared to Unforgettable’s series debut a year earlier, CBS was down by 14% in the demo (vs a 2.9 rating) and down by 4% in viewers (vs 14.09 million). While the viewership is very impressive, the demo is less so and CBS has cancelled many series for low demo numbers.

Note: These ratings are collected by the Nielsen company and are the final national numbers. These are different from the fast affiliate numbers which are just estimates of the actual ratings and are reported on by most other outlets. The final nationals are typically released within 24 hours of the programming or, in the case of weekends and holidays, a couple days later.

What do you think? Do you like the Vegas TV series? Do you think it should be cancelled or renewed for a second season?