According to the Maryland State Board of Elections website 11,580 votes were cast in Howard County on day 1 of early voting (October 26th). Here is the county by county chart:

Here is the breakdown by councilmanic district:

In 2016 on day 1 of early voting Howard County voters cast 8,518 votes:

I will continue to track and report this data on the blog as the data is released by the state.

Scott E