Candidates who win the Rajya Sabha elections are called "Members of Parliament" and hold their seats for six years.
[1] Members of parliament in the Lok Sabha (House of the People) from Puducherry are directly elected by being voted upon by all adult citizens of the union territory from a set of candidates who stand in their respective constituencies.
Candidates who win the Lok Sabha elections are called "Members of Parliament" and hold their seats for five years or until the body is dissolved by the president of India on the advice of the council of ministers.
[2] Members of the Puducherry Legislative Assembly are directly elected by being voted upon by all adult citizens of the state from a set of candidates who stand in their respective constituencies.
When an elected candidate to either the Rajya Sabha, Lok Sabha, or Puducherry Legislative Assembly leaves the office vacant before their term ends, a bye-election is conducted to find a suitable replacement to fill the vacant position.
Common reasons for by-elections: But other reasons occur when the incumbent is disqualified for being ineligible to continue in office (criminal conviction, failure to maintain a minimum level of attendance in the office due to election irregularities found later, or when a candidate wins more than one seat and has to vacate one).