This whole conversation is very germane to this thread:
https://www.nytimes.com/2026/02/07/opinion/trump-nationalize-elections.html?unlocked_article_code=1.KVA.76ke.WYuwUiddRe1j&smid=url-share
(Gift link is to New York Times 31-minute conversation video, and transcript: “The Real Threat Isn’t Trump. It’s the MAGA Apparatus. The round table convenes to debate whether we need to worry about the midterms being free and fair.”)
Among other matters, they discuss how US elections are run at the local (precinct) level, so it’s impossible to “rig” them directly…but MAGA has spent several years inserting folks into positions like poll-watchers, county election officials, etc., so it will be easier for them to delegitimize the results (both before and after Election Day), which could have real consequences – amplified by the knowledge that the Jan 6 insurrectionists were pardoned (though Jamelle Bouie, in particular, is rather optimistic on this score, noting how Trump’s actionable “successes” have tended to be when legal and institutional structures aren’t in place to stop him, e.g. ICE thuggery via one agency where the president really does have power).
ICE agents (or the like) scaring voters away is discussed as well, but doesn’t seem to be a major concern. At one point they note that the local election workers of all stripes – most of them volunteers – are generally proud of their work, and really do try to run them fairly. A lot depends on EVERYONE being vigilant (take the brave folks of Minneapolis as a guiding light), and encouraging our neighbors to vote and participate in the process.