Marshall seems to have the lead, so it's inaccurate to call it a tossup. Lean R based on the polling, Likely R overall since undecideds probably go to Marshall and partisanship should help him, even if Trump gets an underwhelming win there.
Kansas surely wasn't going to elect someone who would fight ta raise taxes, stricter gun control, abortion and would oppose Amy Coney Barret's SCOTUS nomination.
Gov Kelly wasn't leading in a poll until election day, that's the only poll that matters and this race is gonna be competetive