SP
It won 23 of 543 seats after standing in 193. Out of every 100 votes, 3 went to it.
The numbers
SP · Lok Sabha 2009
By state
bars: vote share · right: seats
About this data
Source: Election Commission of India, statistical reports for the 2009 Lok Sabha election (detailed results, list of winners, list of parties). Vote shares are of valid votes, excluding NOTA, as ECI reports them. Turnout here is votes counted (including NOTA) divided by electors, so it runs slightly below ECI's official figure, which also counts rejected votes.
Constituencies of today's Telangana (17) are placed there by name; at the time they were part of Andhra Pradesh, and a few boundaries straddled the present state lines.
Constituencies follow the 2008 delimitation.
Map boundaries are approximate and for illustration.