Crossword Puzzle It puts you off course

Clue: It puts you off course

Puts in office (e.g. ELECTS with 6 letters)
Puts into office (ELECTS with 6 letters)
Puts in office by ballot (ELECTS with 6 letters)
Puts in an office (ELECTS with 6 letters)
Puts someone into office? (HIRESON with 7 letters)
Puts in office again (RESEATS with 7 letters)
Puts in office: Var. (ENSTATES with 8 letters)
Offer courses for (CATER with 5 letters)
A large one offers many courses (MENU with 4 letters)
Amtrak ride that offers high-level math courses? (CALCULUSTRAIN with 13 letters)