Good morning. The US justice department is said to have issued subpoenas after a report that the Alaska Democrat Mary Peltola’s campaign collaborated with party operatives to get a challenger with the same name as the Republican senator Dan Sullivan on to the midterm ballot.

Ballot stacking is a political tactic used in elections to draw votes away from an opponent by “stacking” the ballot with other candidates. While it is not illegal, the US president and the justice department have filed a lawsuit pre-emptively to block the certification of the Senate election results if the incumbent senator loses. Ariana Baio explains what is going on .

More developments in the midterms:

The Trump administration has opened a criminal investigation in California over claims that thousands of noncitizens are registered to vote. Donald Trump has repeatedly alleged that California’s elections are “corrupt” and “rigged”.…