300
Consider the following example: "An ABC News/Washington Post poll was conducted by landline and cell phone Jan. 29-Feb. 2, 2014, in English and Spanish, which included responses from a random national sample of 1,013 adults in the US. Fifty percent in an ABC News/Washington Post poll hold a favorable opinion of the Winter Olympics starting this week in Sochi, Russia." In this example, this is 1,013.
What is sample size?