Often, the lack of choice results in colossal voter apathy, expressed either in the form of invalid votes or by preferring not to go to the polling station.
What you should know
In a particular constituency, if a voter has dislike to all of the candidates competing, he can show his dislike to all of them by registering for 49-O .
Rule 49-O of the Conduct of Election Rules, 1961 states that if a person decides not to record his vote, then the presiding officer shall make a remark to that effect against his name in the register of voters and obtain the latter's signature or thumb impression against such remark.
If the rejections exceed the number of votes polled, a re-election is ordered, but the rejected candidates do not have the right to contest again.
In the voting using the conventional ballot paper and ballot boxes, an elector can drop the ballot paper without marking his vote against any of the candidates, if he chooses so. However, in the voting using the Electronic Voting Machines, such a facility is not available to the voter and the secrecy of voting is not protected anymore.
Proposal for electronic reform
It would be technically very easy to mark one of the buttons as 'None of the Above' to facilitate negative or neutral voting and to maintain the secrecy of the ballot. The Election Commission had recommended such a change in 2001.
So, if you don't like any of the candidates, don't forget that a neutral vote is also possible! Make full use of your democratic rights...
Sources: 1, 2, 3, 4