Incumbent congressional Republicans face relatively slim cash-on-hand leads and a national fundraising disadvantage as the new year approaches, campaign finance records show.

Of the 17 House races the Cook Political Report rates as “toss-ups,” a category where the two parties have roughly even odds of victory, Republicans have a cash-on-hand advantage in 12. These 12 races, however, represent all the elections where Republicans are defending toss-up seats; the remaining five hyper-competitive races feature Democratic incumbents who have a cash advantage over their best-funded GOP challenger.