Labour's Andy McDonald has claimed a strong majority of 8,211 - just under half the number of votes tallied in Middlesbrough.
The by-election saw 16,866 votes cast from an electorate of 65,098.
The full results are as follows:
- Andy McDonald (Lab) 10,201 (60.48%, +14.60%)
- Richard Elvin (UKIP) 1,990 (11.80%, +8.10%)
- George Selmer (Lib Dems) 1,672 (9.91%, -10.00%)
- Ben Houchen (Cons) 1,063 (6.30%, -12.48%)
- Imdad Hussain (Peace) 1,060 (6.28%)
- Peter Foreman (BNP) 328 (1.94%, -3.90%)
- John Malcolm (TUSC) 277 (1.64%)
- Mark Heslehurst (ND) 275 (1.63%)
More top news
Emma Jesson brings you Saturday night's forecast
Feeling much colder later on Saturday. Wintry showers possible on Sunday and Monday
The pressure group Ashley Out has called for demonstrations outside every Sports Direct store within a 20-mile radius of St James' Park.