This is the latest poll showing how voters would vote for Congress (if the election was now). It is the Public Policy Polling survey -- done between February 9th and 11th of a random national sample of 687 registered voters, with a margin of error of 3.7 points.
The poll shows that Democrats currently hold an 8 point advantage (49% to 41%). Perhaps the most important is the gender gap, which significantly favors Democrats. While men favor Republicans by a 3 point margin, women favor Democrats by a whopping 17 point margin. That could be even worse, considering the fact that women vote in larger numbers than men do. And the proliferation of misogynists, abusers, and wife-beaters in the White House is certainly not going to help Republicans.
It's still looking like we could have a wave election in November -- an election that would flip one or both houses of Congress to the control by Democrats.