Prime Minister Narendra Modi on Thursday hit out at the Samajwadi Party (SP) and Bahujan Samaj Party (BSP), accusing the two parties of indulging in casteist politics.

Amid criticism for campaigning for his wife and Samajwadi Party (SP) candidate Poonam Sinha, Congress leader Shatrughan Sinha on Saturday said to support his wife is his duty as a husband.

Poonam Sinha, an SP-BSP-RLD candidate from Lucknow, is pitted against Union Minister Rajnath Singh in the constituency. Rajnath had won from Lucknow in the 2014 general elections.

The Samajwadi Party (SP) has named Poonam Sinha, the wife of actor-turned-politician Shatrughan Sinha, as its candidate from Lucknow Lok Sabha seat against Union home minister Rajnath Singh.

The BSP leader had won from Dibai constituency in the 2007 Assembly elections in the state. However, he joined Samajwadi Party (SP) in 2012 and re-contested from the seat.

Amit Shah tore into Azam Khan for his ‘lewd comments’ against party candidate Jaya Prada and demanded apology from Samajwadi Party (SP) and its ally Bahujan Samaj Party (BSP) over his derogatory comments.

"The Congress was tainted by bofors. BJP government is tainted by Rafale... The BJP government has been misusing probe agencies - CBI, ED - against its rivals. You don't need to give another chance to them," said Mayawati.

Just days back, the Nishad party had snapped ties with SP-BSP-RLD mahagathbandhan after tussle over allocation of Lok Sabha seats.

In an FIR on March 29, the complainant alleged that Khan gave a provocative and derogatory speech at his party office against the district officer, sub-divisional magistrate, additional district magistrate and district magistrate.

In 2014, BJP and its allies won 73 out of 80 Lok Sabha seats at stake in the state. Samajwadi Party won five seats while the Congress could manage to win only two seats. Bahujan Samajwadi Party drew a blank.