Democrats are warning their party not to get too bullish on House gains

This post was originally published on Politico.

Senior Democrats are tempering their expectations about how big of a House majority they might win, as both parties see a tightening battlemap.

The latest rounds of internal polling from both parties from the middle of October show GOP candidates gaining ground in the Midwest and narrowing races in a key Colorado seat and elsewhere, according to six people familiar with the data who were granted anonymity to discuss it. Republicans’ deluge of money also seems to be helping shore up some imperiled Florida seats even as they face serious problems in North Carolina and Texas. The GOP gerrymandered those three