First off here: Richard Shelby is running for reelection to his Senate seat. Shelby was first elected as a Democrat in 1986 and switched to a Republican in 1994. While he could face some opposition from the right; he has a large war chest and is a stronger campaigner that Cochran was in neighboring Mississippi last year. While he will not be running unopposed, I doubt he will win by a margin under high double digits.
This will also not be a competitive race for the Presidential contest. There has been no polling in Alabama about 2016 and the Cook PVI here is R +14. So as things look right now, Clinton would probably lose here by low double digits.
The State only has one Democratic member of congress at this point. The districts are so polarized in this state that all seats here are very safe for the parties that current hold them.