Messenger: Sierra Club IEC

Candidate: Jared Polis

Contest: Governor

Affiliation: D

Date delivered: June 2, 2018

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Message type: mailer

Message tone: positive

About the message: This Sierra Club mailer supports Congressman Jared Polis in the four-way Democratic gubernatorial primary. It notes that Polis is the only candidate not accepting PAC money or corporate money (though contributions from businesses are prohibited in Colorado). It also emphasizes Polis' conservation credentials.

The Sierra Club is also airing TV ads to support Polis.

About the messenger: The Sierra Club has a state-level independent spending committee to support candidates they endorse. The group may accept and spend unlimited amounts, though they aren't allowed to coordinate with candidates.

The messenger's money: The committee received $600,000 from the national Sierra Club. Because that group doesn't disclose its donors, the source would be considered "dark" money.