Preferences for control of Congress are tight, but Republicans have gained on Democrats since January. Thirty-six percent in last month's poll said they would rather see the Democrats in charge of Congress and 37 percent chose Republicans.
Democrats held a narrow advantage on that question in January, when 39 percent favored the Democrats and 32 percent the Republicans.
The shift stems largely from a change among those most interested in politics.
In the new poll, registered voters who are most strongly interested in politics favored the Republicans by 14 percentage points, 51 percent to 37 percent. In January, this group was about evenly split, with 42 percent preferring Democrats and 45 percent the Republicans.
That's not the only positive sign in the poll for the Republicans.
Favorable views of the GOP have improved, with 38 percent overall now saying they hold a favorable impression of the Party. Republicans' positive view of their own party has increased from 57 percent in January to 72 percent now.
Even impressions of the tea party movement have shifted more positive in recent months. GOP favorability still lags behind that of the Democrats, however, with 43 percent holding a favorable view of the Democratic Party.