Supporters of former president Donald Trump have swamped local election offices across the nation in recent weeks with a coordinated campaign of requests for 2020 voting records, in some cases paralyzing preparations for the fall election season.

In nearly two dozen states and scores of counties, election officials are fielding what many describe as an unprecedented wave of public records requests in the final weeks of summer, one they say may be intended to hinder their work and weaken an already strained system. The avalanche of sometimes identically worded requests has forced some to dedicate days to the process of responding even as they scurry to finalize polling locations, mail out absentee ballots and prepare for early voting in October, officials said.

In Wisconsin, one recent request asks for 34 different types of documents. In North Carolina, hundreds of requests came in at state and local offices on one day alone. In Kentucky, officials don’t recognize the technical-sounding documents they’re being asked to produce — and when they seek clarification, the requesters say they don’t know, either. ...