The reason for the lawsuit is that opinion polls showed that the Democratic presidential candidate Kamala Harris was leading over Trump in the state of Iowa, according to the future US president.
The future US president Trump is seeking in his lawsuit "accountability for serious interference in the election", reports the media company NBC.
According to the opinion poll, which was published by Des Moines Register, Harris led by three percentage points in the state days before the presidential election in November. When the votes were counted, Trump had won by over twelve percentage points.
"I'm doing this because I have a duty", claims Trump.
The experienced pollster Ann Selzer has announced that she will no longer work with political opinion polls. The lawsuit is, according to experts, futile.