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DENVER — Democratic presidential candidate Bernie Sanders will hold a campaign rally in Denver on Saturday before speaking at the Colorado Democratic Party’s annual dinner, the campaign announced Thursday.

The senator from Vermont will be at the Colorado Convention Center, and is free and open to the public. Tickets are not required but RSVPs are strongly encouraged.

Admission will be first come, first served. It’s not known how many spots are available. The doors open at 3 p.m.

Those attending should not bring bags and each person is limited to small personal items such as keys and cellphones.

The campaign said Sanders will speak aobut “getting big money out of politics, combating climate change and making college affordable.”

Admission is first come first served. Organizers did not say how many spots were available.

The other Democratic presidential candidate, Hillary Clinton, will also speak at the dinner on Saturday.

The Democratic caucus in Colorado is March 1.