I wrote "Ik hou van de politiek" and it was marked as correct. Can you say both "Ik hou van" and "Ik houd van"?
Yes, you can. 'Ik houd van' is a bit more formal.
Good to know. Thank you.
What about 'Ik houd van politiek', so without the definite article 'de' ?
Both are fine.
Still marked wrong now.
Accepted now March 2021
"Ik vind politiek leuk" was marked wrong, although I've seen the "leuk vinden" construction used to mean "to like". Can it not be used also here?
Yes, although I think it is more common to say: Ik vind politiek interessant
Leuk vinden = like, houden van = love