Supporters wait to be allowed onto City Hall grounds before the launch 

Supporters wait to be allowed onto City Hall grounds before the launch of New York City Comptroller John Liu's mayoral campaign on the steps of City Hall, Sunday, March 17, 2013 in New York. Already the first person of Asian descent to be elected citywide in New York, Liu hopes to become the city's first Asian-American mayor. (AP Photo/Jason DeCrow)
Associated Press
Supporters wait to be allowed onto City Hall grounds before the launch of New York City Comptroller John Liu's mayoral campaign on the steps of City Hall, Sunday, March 17, 2013 in New York. Already the first person of Asian descent to be elected citywide in New York, Liu hopes to become the city's first Asian-American mayor. (AP Photo/Jason DeCrow)
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