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Clinton County Democratic Party volunteer Drew Kelley, at the party's office in Clinton last week. Kelley is leading the county party's social media efforts.

A year ago, Donald Trump became the first Republican to win Clinton County, Iowa, in a presidential race since 1984.

Much like his victory across the country, his win in Clinton County came as a shock to many.

A year later, as Democrats nationwide prepare for the 2018 midterm elections, Democrats in Clinton County are laying the groundwork for what they hope will be a comeback.

There is a lot at stake in 2018: The Iowa governor's race, along with legislative and local contests.

Meanwhile, Republicans, flush from victory, aren't sitting still. Even as some Republicans in Congress have strayed from President Trump, party support for him remains strong in Clinton County.

Political reporter Ed Tibbetts looks into both parties' plans in Sunday's Big Story.