The situations involving disgraced and relapsed former Congressman Anthony Weiner and Ben Quayle, who hasn't been in politics for about a year, are very analogous. Just ask Katie Glueck at the Politico. Oh, and the the Weiner situation is also very analogous to that of Virginia Governor Bob McDonnell, who has returned $21,000 worth of gifts he should never have taken from a businessperson. Just ask Dana Milbank at the Washington Post.
There appears to be some kind of unwritten rule that you can't attempt to analyze a Democrats' scandalous involvement without dragging a Republican into the mix, no matter how distant or irrelevant the connection. First, let's look at Glueck with Quayle and Weiner (bolds are mine throughout this post):