You can draw imaginary Venn diagrams until the cows come home, there are no conservative Democrats in congress.
You said: “there are no conservative Democrats in congress.”
That may be the case, but it misses the larger point: Palin is willing to work to get conservatives elected. She’s not going to stump for any random liberal Dem that asks her to. I was trying to show greatgrandma that her offer is extended to those office-seekers that are within the “conservative” circle, regardless of whether they’re Republican or Independent or Libertarian or otherwise.