Radio broadcasting began in the early 1920s, but before 1932, not enough people had sets to make radio a factor in politics.
And as for intangibles, a sales executive has to factor in office politics, competition, suddenly transferred prospects, budget battles, bankruptcies, and countless other acts of God and still make his number.
Early voting in one form or another has been a factor in American politics for at least 20 years, says Trey Hood, associate professor of political science at the University of Georgia.
Ecuador indigenous groups in Ecuador not only have been a factor in Ecuadorian politics in the last two decades but their role in deciding the balance of powers within the Ecuadorian political system was crucial after the year 2000 and remains crucial until this very day.
Not surprisingly, its status with the mainland has become a factor in its own internal politics.
If that happens and money ceases to be the decisive factor, California's politics could become wide open again.
While not clear-cut, an analysis of the story lends to the conclusion that politics were in all likelihood the decisive factor in the decision.
Political observers and the public at large tend to believe that the more reliable factor is the cyclical nature of our politics, or the pendulum effect.
The other factor is the growing influence of money in politics.
ECONOMIST: American politics is both too rigid and too flexible
But McBride suggests there's one other major factor in the calculation that has little to do with politics and more to do with the simple task of helping a spouse at a critical time.
Michael Waller, appeared on Fox News' The O'Reilly Factor in his capacity as a professor at the Institute of World Politics.
He has been a guest on virtually every television program where politics is discussed, including: the NBC Today Show, Colbert Report, O'Reilly Factor, Larry King Live, The View, and Real Time With Bill Maher.
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