Fighting the good fight to replace King is Mike Denklau. The Backbencher is an avid supporter of Denklau's campaign and encourages you to do the same. If you live in the 5th district, then find out when Mike is going to be in your area and go meet him. The Backbencher also encourages you to find ways to assist with his campaign. If you live outside the 5th, then consider contributing and telling your friends to that we can raise the national profile of this campaign.
Mike Denklau's website is here.
Here is an ActBlue fundraising page if you want to contribute.