‘Blue Bloods’ (On the Bubble)

While “Blue Bloods” isn’t as close to the chopping block as some of the other “on the bubble” shows on this list, it also isn’t a sure thing like it has been in previous years. The show is currently drawing around 7.5 million viewers a week, which is down approximately 10% from last year. But the slight decrease in viewership isn’t the only factor that could affect the series’ future. Star Tom Selleck only signed a one-year contract to return to the show last year. Whether he’ll decide to re-up (or whether CBS will opt to continue the series without him) remains to be seen.