<P> The lines between the Bolsheviks and the Mensheviks hardened in April 1905 when the Bolsheviks held a Bolsheviks - only meeting in London, which they called the Third Party Congress . The Mensheviks organised a rival conference and the split was thus formalised . </P> <P> The Bolsheviks played a relatively minor role in the 1905 Revolution, and were a minority in the Saint Petersburg Soviet of Workers' Deputies led by Trotsky . The less significant Moscow Soviet, however, was dominated by the Bolsheviks . These soviets became the model for those formed in 1917 . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2012) (Learn how and when to remove this template message) </Td> </Tr>

Who were the bolsheviks and what did they want