Ben McAdams' lead in the 4th District in Salt Lake County

Ben McAdams' lead over Rep. Mia Love, R-Utah, continued to slip away Salt Lake and Juab counties showed the incumbent congresswoman gaining crucial votes.

The Democratic candidate and current Salt Lake County mayor are now leading by 873 votes after more than 12,000 bales were added to the 4th Congressional District.

And with the heavily-Republican Utah County is expected to update its count on Friday, McAdams precarious lead of 0.36 percentage points is likely to change, and could possibly erode away entirely.

After Wednesday's update, Dave Hansen's love campaign has come to a head.

"Since Election Day, Mia has consistently improved her margin and is on a steady path to victory," Hansen said.

The new numbers were released on the same day as Salt Lake County Clerk Sherrie Swenson. Her campaigns are seeking to count the ballots until they are able to oversee and challenge the verification of voting signatures on mail-in and provisional bots.

A hearing on the street is scheduled for Thursday in the Third District Court.

The Salt Lake Tribune will update this story.