BradBlog - While Brad Friedman (and guests) blog about other issues, many are focused on election integrity in one form or another. The site is huge. We suggest you scroll down a bit and on the right, under the search box, click on categories, e.g., election reform (includes Vote-by-Mail, Voter ID), voter registration.
John Gideon/VotersUnite's 'Daily Voting News' is often a valuable source of articles for ElectionPreparedness.com.
Election Updates - Blog at CalTech with new research, analysis and commentary on election reform, voting technology, and election administration.
News From Underground - Mark Crispin Miller posts a [daily] Voter Protection Alert with blogs from numerous sources in the election integrity community.