### Clue: Believe setter is based in Maryland, say (8)
### Answer: ESTIMATE 
 ### Explanation: Definition: Believe
 I'M(contraction of "I am";setter is, self-referentially) **contained in**(based in) E.STATE(abbrev. for an Eastern State of the USA, an example of which;say, is Maryland).
Answer: To form an opinion of;to believe, as in "I estimate that my chances are …".