57. Fighting electoral fraud is no doubt a legitimate aim that may warrant measures of differentiation within an electoral system. Measures adopted in fighting electoral fraud guarantee the equality among citizens (by removing non legitimated expressions of opinion) and improve the electoral process on the whole. In general terms, it may be concluded that the United Kingdom authorities pursue a legitimate aim when enacting these provisions. A different question, which will be discussed in more detail below, refers to the proportionality of the measure.