UKIP's second place finish in South Shields saw them claim 24.21% of the vote in the constituency, having not contested the seat in the last General Election.
By contrast, the vote of all three main parties fell - though only moderately for Labour.
The Conservatives saw their vote drop by 10.04%, down to 11.55% overall, while the Liberal Democrats - who finished third in 2010 - tumbled 12.79% to just 1.42% of the vote.
Newly-installed MP Emma Lewell-Buck claimed 50.51% of the constituency's vote, a drop of 1.51% from the vote share commanded by her predecessor David Miliband.
More top news
Following a bruising televised debate with Hillary Clinton, Donald Trump's week seems to have only got worse.
Monarch's package holiday licence has been temporarily extended with the airline receiving "significant further investment".
Ex-football manager Harry Redknapp told undercover reporters his own players bet on the result of one of their own matches, it is claimed.