I'm reading some sentiment that maybe the Democrat's large lead in generic congressional balloting doesn't matter, because Democrats always lead in generic balloting. Here's Gallup's table of historical context for the numbers:


Long story short, the fourteen point lead is a big lead by historical standards. It's February right now and the election's in November. That's plenty of time for things to change so in that sense it's not necessarily very significant. But the size of the lead is genuinely large.