Does Mark Takano really have it in the bag?

I have never seen him campaigning, canvassing, yard signs, or even large political signs in public spaces. I know he has hosted town halls, one this year in Perris but he’s just not campaigning as hard as his opponent David Serpa. This isn’t a post to attack or endorse Takano I’m just curious how Blue does district 39 lean that he can run without a massive campaign compared to rollins/calvert