SWEETWATER, Texas -

Former Sweetwater Mayor Greg Wortham will be running in an already crowded field for the state senate seat held by the vacating Robert Duncan.

Wortham announced last week he was resigning his position as mayor to run for the Senate District 28 seat.  That senate position came open when then-Republican Sen. Robert Duncan, who held that position for 18 years, was named chancellor of his alma mater, Texas Tech.

Three others have publicly announced they are running, though none can formally file at this point:

Jodey Arrington, Lubbock. Arrington is a former Texas Tech official and a George W. Bush staffer in both Texas and Washington.

Charles Perry, Lubbock. Perry is the District 83 state representative, and the first to announce his plans to run for the senate seat. He is a Republican.

Epifanio “Eppy” Garza, Wolfforth. Garza announced he will run for the seat – again.  He has run against Duncan previously, but didn’t actively campaign in 2012.

At least two other serious residents of the 51-county area have expressed interest, but haven’t formally stated they are running.

The state is expected to announce a date for the special election at a later date. Wortham said it’s expected to be on the same day as the general election, Nov. 4.

Because it’s for the remainder of a term, there is no primary – and candidates won’t formally run as a member of a specific party.