 the eleventh united states congress was a meeting of the legislative branch of the united states federal government, consisting of the united states senate and the united states house of representatives. it met in washington, d.c. from march 4, 1809 to march 4, 1811, during the first two years of james madison's presidency. the apportionment of seats in the house of representatives was based on the second census of the united states in 1800. both chambers had a democratic-republican majority.  ==major events==  * march 4, 1809: james madison became president of the united states * october 27, 1810: annexation of west florida from spain ==major legislation==  * may 1, 1810: macon's bill number 2, ch. 39,  ==party summary== the count below identifies party affiliations at the beginning of the first session of this congress. changes resulting from subsequent replacements are shown below in the "changes in membership" section. === senate ===  === house of representatives ===  ==leadership== [
11th_United_States_Congress