With a week to go until the April 1 primary, a new Washington Post poll shows Mayor Vince Gray and Councilmember Muriel Bowser neck and neck in the crowded race.

Of the 391 registered Democrats polled who say they are likely to vote, 30 percent say they support Bowser, while 27 percent support the mayor. Councilmember Tommy Wells received the support of 14 percent of these voters, while Councilmember Jack Evans and restauranteur Andy Shallal each garnered 6 percent of the vote.

When adjusted to just white voters, Bowser still leads with 33 percent, while Wells rises to second with 29 percent. Adjusted for just black voters and Gray leads with 40 percent, followed by Bowser with 27 percent.

Here’s more on the poll’s methodology and some other tidbits:

The Post survey reached 1,402 D.C. adults between March 20 and 23 on both land-line and mobile telephones. Of those, 863 are registered Democratic voters, and 391 are likely voters in the April 1 primary. The margin of error for the former group is 4.5 percentage points; for the latter group, it is 6.5 points.

  • When certain or very likely voters were asked to select a second-choice candidate, it was essentially a tie between Bowser (22 percent), Wells (18 percent) and Evans (20 percent).
  • Registered voters are evenly split between Gray and Councilmember David Catania in a hypothetical general election matchup.
  • Sixty-two percent of certain or very likely voters believe Uncle Earl, while 76 percent think Gray has been treated fairly by U.S. Attorney Ron Machen.
  • Marion Barry’s endorsement of Gray does not make a difference to 61 percent of certain or very likely voters.

    Update: An NBC4/Marist poll released today paints a similar picture. With Democrats likely to vote, Bowser has 28 percent of the vote and Gray has 26 percent.