This Sept. 11 photo shows Democratic presidential candidate Hillary Clinton, center, with Sen. Chuck Schumer, D-N.Y., left, Rep. Joseph Crowley, D-N.Y., second from left at top, and New York Mayor Bill de Blasio, center top, at the Sept. 11 memorial in New York. Clinton will be back on the campaign trail Thursday, after spending several days recovering from pneumonia.
This Sept. 11 photo shows Democratic presidential candidate Hillary Clinton, center, with Sen. Chuck Schumer, D-N.Y., left, Rep. Joseph Crowley, D-N.Y., second from left at top, and New York Mayor Bill de Blasio, center top, at the Sept. 11 memorial in New York. Clinton will be back on the campaign trail Thursday, after spending several days recovering from pneumonia. Andrew Harnik AP
This Sept. 11 photo shows Democratic presidential candidate Hillary Clinton, center, with Sen. Chuck Schumer, D-N.Y., left, Rep. Joseph Crowley, D-N.Y., second from left at top, and New York Mayor Bill de Blasio, center top, at the Sept. 11 memorial in New York. Clinton will be back on the campaign trail Thursday, after spending several days recovering from pneumonia. Andrew Harnik AP