Consider the following statements with reference to the by-election:
1. The provisions for by-elections are mentioned in Article 325 of the Constitution of India.
2. By-election for any vacancy should be held within six months of that vacancy arising, provided the remainder of the term is not less than one year.
3. By-election may not be held if the Election Commission of India and the Centre feels that holding the by-election is difficult.
Which of the statements given above is/are correct?