Raja Pakar, one of the 243 Assembly constituencies in Bihar, is located in Vaishali district and falls under the Hajipur (SC) Lok Sabha seat. Created after the 2008 delimitation exercise, the seat is reserved for the Scheduled Castes and comprises the Raja Pakar, Desri and Sahdei Buzurg community development blocks. It serves as the headquarters of the Raja Pakar block and is part of the Mahua Subdivision.

The constituency lies about 17 km from Hajipur, close to the Gandak and Ganga rivers. Its flat, fertile plains support a predominantly agricultural economy, with paddy, wheat and maize as staple crops. In recent years, banana cultivation has expanded due to high-yielding, disease-resistant varieties promoted by the Banana Research Centre in Goraul. The area remains entirely rural, with road links connecting it to Hajipur, Sonpur, Mahnar Bazar and Lalganj, and further to Muzaffarpur and Patna.

Electorally, Raja Pakar has seen results shift with changing alliances rather than fixed party loyalty. JD(U) won here in 2010 when it was aligned with the BJP, followed by RJD in 2015 after JD(U)’s alliance switch, and Congress in 2020 as part of the RJD-Congress combine. Congress’s Pratima Kumari currently represents the seat, having won 54,299 votes in 2020 and defeating JD(U)’s Mahendra Ram by 1,796 votes. The contest was notably shaped by the LJP, which polled 24,689 votes after breaking from the NDA, splitting the anti-RJD vote.

Raja Pakar had 272,256 registered voters in the 2020 Assembly polls, with a turnout of 55.96%. As per 2024 Election Commission data, the electorate has risen to 285,024 (150,050 male, 134,964 female and 10 third-gender voters). Scheduled Castes make up about 22% of the electorate, while Muslims account for around 7%. The constituency has consistently recorded low turnout, with nearly 45% of voters typically not casting their ballots.

Raja Pakar entered national headlines in 2007 when 10 alleged thieves were lynched by a mob at Dhelphodwa Chowk, drawing significant political criticism at the time. Otherwise, the region has no major recorded historical identity of its own, though its proximity to the ancient city of Vaishali suggests older cultural connections.

Political alignments shifted again in the 2024 Lok Sabha elections, when JD(U) and LJP (Ram Vilas) realigned within the NDA, and LJP(RV) candidate Chirag Paswan led by 27,604 votes in the Raja Pakar Assembly segment — an indicator of the alliance’s current strength.

It went to polls on November 6, 2025 in the first phase. Raja Pakar seat is expected to see a closely-watched contest. The NDA holds a visible organisational and alliance advantage at present, while the incumbent Congress MLA’s prospects depend heavily on whether the RJD-Congress combine can mobilise a significantly larger share of habitual non-voters in a constituency that has yet to cross 60% voter turnout since its creation.