Conservative groups are rallying to prevent Congress from taking up any legislation to fund the government during the lame-duck session after the election, and warn that doing so would empower lobbyists over taxpayers.

Free-market groups will put pressure on Congress not to pass a short-term funding bill in September that would require Congress to act again during the lame duck between November and January or else face the threat of a partial government shutdown, said Andy Koenig, senior policy advisor for Freedom Partners.