If I were looking for vlogs, I'd probably search through youtube or at the worst, google video search. I think that some bloggers might also do vlogging, but I don't think everyone does both. The one challenge I saw specifically with your search term is that you do have to look past joke/troll/satire videos.
I would also probably look to see if there are other terms or keywords that associate with what you want. For example, if you are looking for conservative commentary on a particular issue, then include that in your search. (For example, if I were hypothetically looking for traditional marriage advocacy in blogs or vlogs, then I would include stuff about that as well as looking for particular religious views who are known to support a very traditional view, and so on.)
I googled for a conservative sub-reddit and found r/conservative. They seem to be more news articles, but I imagine vlogs and blogs occasionally may be submitted there (maybe?)