Hello student if you compare BA political science with B.tech course then B.tech course is more valuable there's no doubt but as you aim is to get a good job in government sector then there's no huge difference if you pursue B.tech engineering or BA UG Course you can apply for all top Goverment jobs like income Tax Officer, IAS, IPS, RAILWAY, etc.

But yes with BA graduate degree there's less jobs if you compare it with B.tech degree.

Feel free to comment if you have any doubt

Good luck