You must mean mainlines. Overall, it's much more still on diesel: only around a quarter electrified. *Traitor*, n. A benighted individual who perceives an illusory distinction between serving his nation and abetting the criminals who govern it.
OTOH, it's a simple exercise to electrify, because on much of the non-electric parts of the main line, the masts are already there - they just need the copper.
- Jake Ceterum censeo Chicago esse delendam