What is the suggestion here? That Democrats ought to go around making absurd comments to the effect of "I like Congressional leaders who don't get shot in the posterior"? Maybe I'm an outleir, I've never noticed a paucity of criticism surrounding Steve Scalise.
I think the meaning is trying to run ads connecting random Republican candidates to Scalise, etc. that don't talk about policy or whatever and instead harp on him being a scary arch-conservative generally. On the one hand, Scalise isn't a household name the way Pelosi is. On the other hand, making him a household name might be beneficial for the Democrats.
