open up a/(one's) lead

open up a/(one's) lead

To create some amount of distance between one's leading position in some competition, especially a race or election, and the rest of the competitors. Jones has opened up quite a lead here—I don't think anyone can catch him! She opened up her lead on the first straightaway, which was key to her dominant victory. The political newcomer has been opening up a surprising lead in the presidential primaries.
See also: lead, open, up
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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