( CNN ) -- Democrats have been hosting their party 's convention for 180 years . Here 's a look , by the numbers , at the Democratic Party past and present : . 1828 -- The year that Andrew Jackson , considered the first Democratic president , was elected to office . 8 -- Number of U.S. Presidents who have belonged to the Democratic Party since 1900 . 31 % -- Number of Americans that identify themselves as Democrats , as of 2012 . John King : To win , Obama must make history again . 20 -- Number of Democratic governors in the U.S. as of 2012 . 51 -- Number of Democrats in the U.S. Senate as of 2012 . 26 -- Longest stretch in years that Democrats controlled the Senate , from 1955 to 1981 . Speakers : Democratic National Convention . 190 -- Number of Democrats in the U.S. House as of 2012 . 40 -- Longest stretch in years that Democrats controlled the House of Representatives , from 1955 to 1995 . 334 -- Number of Democrats in the House during the 75th Congress ( 1937-1939 ) , compared to 88 Republicans . 1832 -- Year of the first Democratic National Convention , in Baltimore . BREAKING : Obama 's speech to move indoors . $ 57.5 million -- Amount of money raised by President Obama and the DNC in July 2012 . $ 90.9 million -- Amount spent by President Obama and the DNC in July 2012 . 53 % - Percentage of donations to the Obama campaign that have been for $ 200 or less . $ 25.3 million -- Amount raised by pro-Obama super PAC Priorities USA during the campaign .
8 -- U.S. Presidents who have belonged to the Democratic Party since 1900 . $ 57.5 million -- Amount raised by President Obama and the DNC in July 2012 . $ 90.9 million -- Amount spent by Obama and the DNC in July 2012 . $ 25.3 million -- Amount raised by pro-Obama super PAC .