John McCain's health plan would reduce the ranks of the uninsured by about 21.1 million people if fully put in place by 2010, while Barack Obama's would reduce the number by 26.6 million, according to an analysis by consulting firm The Lewin Group. McCain's plan was projected to cost more than $2 trillion from 2010 through 2019, while Obama's would cost $1.17 trillion, according to the analysis.