Thanks to a more unified party and the advantage among independents Republicans continue to lead the generic Congressional ballot, 47-42 this month.
92% of Republicans are committed to supporting their party this fall while just 86% of Democrats are. For all the unhappiness many GOP voters may express with their party they are still pretty universally planning to vote for it this fall. Independents voters are leaning toward the GOP by a 37-31 spread.
The Republican advantage has been built largely on a massive shift with white voters. In the 2006 midterm whites went for the GOP by just a 51-47 margin. Now they're leaning toward the Republicans 57-32. 84% of blacks and 65% of Hispanics still plan to vote Democratic, relatively comparable to the last midterm when undecideds are factored in.
Americans are almost evenly divided on whether they think the GOP will regain control of the House with 40% saying yes and 41% saying no. Republican voters are optimistic that their party will take power, with 76% expressing that sentiment. Democrats are almost equally optimistic they will stay in charge with 74% saying that's the likely outcome.
Republicans have an enthusiasm advantage but it's not massive- 72% of their voters say they're very excited about casting their ballots this year to 62% of Democrats.
Full results here