The Democratic Unionist Party has no legal power to hold up the trade deal, which would simplify post-Brexit trad rules. But a rejection could sabotage efforts to restart Northern Ireland’s government. https://nyti.ms/3Y7bFOJ
The small Brexit Party could act as a spoiler, draining away just enough votes in enough closely contested districts to swing the balance of power in Parliament toward Labour. https://nyti.ms/2N6ua4k