Is this sentence right
Its original justifications outmoded, its operations inscrutable, and its effects at odds with the goals of a democracy, the Electoral College is an institution that some would like to abandon.
from Kaplan Toefl prep.? Why the book did not say
Its original justifications are outmoded, its operations are inscrutable..."
I don't know the reason, is it a typing error? Or is it still grammatically correct?