Original sentence: On May 18 2008, Barack Obama addressed a rally in Tom McCall Waterfront Park in Portland, with a crowd estimated at 75,000 (60,000 inside the gates and another 15,000 outside).This crowd was the largest ever to greet Obama, surpassing his previous record of 35,000 people in Pennsylvania
Edited sentence: An Obama camp estimate placed the number of supporters at 75,000, about 60,000 of whom were within the rally gates, with another 15,000 gathered on the opposite bank of the Willamette River and on the river itself.On May 18, 2008, leading candidate Barack Obama addressed a crowd "the Size of a City," as the Washington Post called the Portland crowd.This crowd was the largest ever to greet Obama, easily surpassing his previous record of 35,000 peoople in Pennsylvania