But here the decisive influence was probably the music.

Many times they had a decisive influence on the choice of monarchs.

The years he spent in Rome had a decisive influence on him.

Senior military officers might be able to exercise decisive influence if they wished.

In the ten years which followed he had a decisive influence upon the musical life of the city.

They pay for the system and thereby exercise decisive influence over it.

Control is widely defined as the ability to exercise a decisive influence over a company by any means.

Can they have such a decisive influence on Europe too?

The answer will naturally have a decisive influence on the vote.

Fairly or not, many of the public think them too weak to be able to have a decisive influence on coalition policy.