"the first Reform Bills of the 1830s"

The Reform Bills of 1832, 1835 and 1836 removed a great deal of the irregularities, inequalities and corruption from the British electoral system and extended the franchise from around 400,000 to 650,000 voters (63% increase). The newly-enfranchised were from the middle classes because qualifying for a vote required the ownership of land or property worth at least £10 a year.

The Reform Bills of the 1860s aimed to massively increase the franchise by giving the vote to the working classes as well. The bill that was finally passed enlarged the franchise by 88%.