Kentucky has completed the Democratic primary recanvass requested by Bernie Sanders, and the results of last week's primary remain unchanged -- Hillary Clinton still won the most votes in the very close race.

Kentucky Secretary of State Alison Lundergan Grimes announced on Twitter that Clinton was the unofficial winner of the race, by a slim margin of 1,911 votes out of over 450,000 votes cast.

Hillary Clinton is unofficial winner of KY Dem. presidential primary. The margin is 1,911 as certified by counties required by law last wk. — Alison L. Grimes (@KySecofState) May 26, 2016

The State Board of Elections in Kentucky will certify the results in a few days, on May 31.

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Sanders' presidential campaign had requested a recanvass in Kentucky's presidential primary -- the vote tally initially showed he trailed Hillary Clinton by less than one-half of 1 percent of the vote.

A recanvass is not a recount but a review of the voting totals. It was unlikely to affect the final outcome but could have affected the awarding of the single delegate in Kentucky left to be awarded, and it also would have enabled Sanders to take a state from Clinton's "win" column and claim it for his own.

Clinton still holds a large superdelegate lead and is on track to clinch the nomination through the combination of pledged delegates and superdelegates after contests on June 7.

Clinton and Sanders both picked up 27 delegates in Kentucky and one remaining delegate will be allocated in the sixth congressional district, which includes Frankfort and Lexington. The delegate will be awarded based on final vote tallies and Clinton currently leads Sanders by a slim margin of about 500 votes in that district.

CBS News' Hannah Fraser-Chanpong contributed to this report