This “Gutter” politics...is coming from the Trump side period.
Here is the link for the FR story I spoke of in Comment #288, regarding Rubio as the mistress source.
http://www.freerepublic.com/focus/f-news/3413864/posts
And here is a comment replied to me near the end at that post, which makes sense to me.
“The people working on Team Rubio were out of work and they monetized it. Is anyone surprised? Even muckrakers need to get paid.”