Could the investigation into Conservative party election spending mean there is a new election?
No. But in theory, if a UK election court finds an individual candidate or their agent guilty of any corrupt or illegal practice, their election could be declared void, which would mean a by-election would be forced.
Twelve UK police forces have passed cases to the Crown Prosecution Service relating to spending by the Conservative Party in the 2015 General election, and the CPS will determine if charges should be made. It would need charges and guilty verdicts in at least nine of those cases, followed by by-elections which were then lost by the Conservatives, before Prime Minister Theresa May would lose her majority, which currently stands at 17. Even in the unlikely event of all that happening, it is possible for governments to continue in office without a majority.