You can't keep other candidates from 'poaching on your turf'. [=from trying to get voters who usually vote for you or your party to vote for them]
In chapter two, the author is on unfamiliar 'turf'. [=is dealing with an unfamiliar subject]
Synthetic 'turf' was installed in the playing field instead of grass.
(..) up for you guys after /. And what did you do, um, what did you do after the invasion? Before you went back to Pesh? After /, we had to choose. Fight to protect our turf or run. And you chose to fight, yeah? We wanted to kill Americans. Yeah. We tried to get into Tora Bora, but the (..)2012 Zero Dark Thirty
(..) to New York and now he's back. And I don't know what to do. So I'm not so sure if it's a better plan to fight him on our turf or his... but you saw what they did, what they can do. At least on his turf, he's not expecting it. So I say we take (..)2018 Avengers: Infinity War
(..) Have Birch and Rasmussen seen this? Not yet. I wanted you to be the first to have a look. I'll schedule a time for you to fill in the president. Oh, no, no, no. That is your turf, Linda. You should do that. - Thank you, Frank. - My pleasure. Thank you. - I so apologize for everything-- (..)2013 TvShow: House of Cards Title: Chapter 2 Season: 1 Episode 2