The main factor driving Trump's surge is that Republicans are consolidating behind him.
Ben seems to assume that price is the main factor driving customers to online competitors.
"Contract type isn't usually the main factor driving someone's job satisfaction.
And I know the main factor driving his success was that beneath it all, he did it because he cared.
The main factor driving this hindrance is the low density of cellulosic biomass.
But intimations of a power vacuum seem to have been the main factor driving Argentina's financial markets down.
Despite the furor in Wisconsin, collective bargaining does not appear to be the main factor driving pension costs higher.
The payments are also the main factor driving the country's recent economic growth, which would have otherwise remained stagnant.
Insurers said the rule did nothing to address the underlying costs of health care, which they described as the main factor driving up premiums.
The statistical bulletin says the main factor driving the accelerating growth of the population is the projected natural increase of births over deaths which accounts for 56% or 2.8 million of the rise over the next 10 years.
Yet scientists already talk of the dawning of a new geological age, the Anthropocene, named because humans, or rather, the industrial civilisation they have created, have become the main factor driving the evolution of Earth.
