Famed actor Sir Patrick Stewart has waded in to the Witney by-election debate just days before voters take to the polls.

The Star Trek and X-Men actor pledged his support to Labour candidate Duncan Enright on Twitter today.

In a Tweet to his 2.3 million followers Sir Patrick said: "An enthusiastic endorsement of Duncan Enright and Labour in the Witney constituency on Thursday."

— Patrick Stewart (@SirPatStew) October 18, 2016 ">http://

The Labour candidate will contest the seat at a by-election on Thursday October 20.

The seat was left vacant after ex-PM David Cameron quit following the shock leave win in the EU referendum.