Samefags have been caught with /pol/ views and /leftypol/ views. However:
>/pol/ samefagging crops up far less
>there are actual threads on /leftypol/ dedicated to the political inclinations of other boards (e.g. /v/) and they contain posts that talk about evangelizing to these boards
>there is no real /pol/ equivalent to the above
>/leftypol/ is slow as fuck despite having a large amount of "active users" which suggests a willingness to deceive the rest of the site
/pol/ views are more prevalent because a large portion of people on this site visit /pol/ in addition to another main board, myself included. But despite the majority being affiliated with /pol/, /leftypol/ samefagging is more prevalent than /pol/ samefagging. I can only guess that happens because /leftypol/ has no real organic support here, so they have to make it look like they do.