His decision comes within days of a key deadline, allowing Maine’s Democratic Party to select a new candidate to face Republican Sen. Susan Collins in a critical contest for Senate control.

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As of Tuesday morning, Platner remained undecided about whether to drop out of the race and wants to see a replacement nominee who shares his vision, according to a source.

Platner has until July 13 to withdraw his bid to unseat Sen. Susan Collins (R-ME), which would give the state party until July 27 to select a new nominee.