A key issue is whether the affidavit is filed in court, as most filed by the Trump team haven’t been. Beyond that, any false statements would need to be deemed to be “material” to the proceedings — i.e. relevant to the actual claims. And from there, any legal jeopardy would require that the statements made were knowingly false.
In the case of affidavits from election observers, for example, it would be difficult to prove that what they were saying was false, especially in instances in which they alleged other people involved in the ballot-counting process said something to them. In addition, statements from those like the Texas security consultant who
mistook data from Minnesota to be from Michigan could be understood as an honest mistake or resulting from a lack of expertise in the subject matter — rather than an outright lie.
The Trump campaign’s affidavits also have a checkered history, to put it kindly. When they have been used in court, they’ve often been cast aside.