Rubuta ci gaba don wannan sakin layi - Ta zama memba na Jam'iyyar Social Democratic Labour Party ta Rasha a 1899 yana da shekaru 27. A shekara ta 1905, Kollontai ya shaida tashin hankalin da aka sani da Bloody Sunday
a St. Petersburg a gaban Gidan Winter Palace. A lokacin rarrabuwa a cikin Jam'iyyar Social Democratic Labour ta Rasha tsakanin Mensheviks karkashin Julius Martov da Bolsheviks karkashin Vladimir Lenin a 1903, Kollontai ba ta tsaya tare da kowane bangare ba da farko, kuma "ta ba da sabis ga bangarorin biyu". A cikin 1906, duk da haka, rashin amincewa da "matsayin adawa da Bolsheviks suka ɗauka game da Duma" kuma duk da cewa ita gabaɗaya ta kasance mai hagu, ta yanke shawarar shiga Mensheviks.