sentences:  The choice fell to Pascual Ortiz Rubio, a revolutionary general who had been out the country, serving as Mexico's ambassador to Brazil, so had no political base in Mexico.When the 1929 Mexican general election was held, the first political test of the newly founded party.Calles made a speech in June 1929 saying that while the Revolution had produced achievements in the economic and social spheres that in the political sphere it was a failure.