Yes, Google re-indexes modified blog post content. However, it may take a while for the changes to be reflected in Google's search results. Make sure that the edited or modified content is still search engine optimized for ranking in search results.
You can also manually make a request for indexing in Google Search Console.
Pro-Tip: To ensure that Google continues to index and rank your blog posts, it is important to maintain consistent content creation and updates.
P.S:
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