UPDATE: The Secretary of State just sent out updated figures, slightly higher than those we reported earlier today. New numbers below.

Welcome to the Halloween edition of the Colorado Peak Politics ballot return report. It’s no trick, another day of ballot returns show Colorado Republicans are being treated to another day of positive numbers, extending their lead from 2.8% yesterday to 3% today.

It looks like the enthusiasm on the Republican side is swamping whatever advantage the much-ballyhooed Obama ground game has built.

According to the Secretary of State, ballot returns as of this fine morning are:

Total Votes: 1,150,698

R – 439,269 (38.2%)

D – 404,870 (35.2%)

U – 295,122 (25.6%)

In 2008, Democrats got out to an early lead, with a 40-33 advantage after the first week, but Republicans eventually closed the gap, slightly outnumbering ballots returned when it was all said and done.

This time around, Republicans have taken the early lead and appear to be building on that advantage as time goes on.

In the three big swing counties of Colorado Republicans are leading by decent margins. In Jefferson County, Republican ballots outnumber Democrats by 6,160. In Larimer County, the GOP retains a 4,624 lead. For Arapahoe County, Democrats have sent in 3,209 less ballots than Republicans.

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Check out the Oct. 31 county-by-county breakdown of ballots returned by party registration here.

Check out previous ballot return reports from Oct. 30, Oct. 29, Oct. 26, Oct. 25, Oct. 24 and Oct. 23.