The Democratic Congressional Campaign Committee (DCCC) is reportedly expanding its 2020 target list, taking aim at six more districts won by President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE in 2016.

The districts are Florida's 16th District, Iowa's 2nd District, Michigan's 3rd District, Ohio's 12th District, Virginia's 5th District and Montana's at-large district.

News of the latest additions to the committee's target list was first reported by Roll Call.

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The newest targets include the seat held by Rep. Justin Amash Justin AmashInternal Democratic poll shows tight race in contest to replace Amash Centrist Democrats 'strongly considering' discharge petition on GOP PPP bill On The Trail: How Nancy Pelosi could improbably become president MORE (I-Mich.), who formally left the GOP last month, as well as the seat held by Democratic Iowa Rep. Dave Loebsack David (Dave) Wayne LoebsackHouse Democrats target Midwestern GOP seats The Hill's Campaign Report: Physician candidates lean on medical experience amid coronavirus campaigning Doctors boost Democrats' hopes to keep House MORE, who is not seeking another term in 2020.

The Cook Political Report has rated both of those districts as toss-ups.

Rep. Greg Gianforte Gregory Richard GianfortePence seeks to boost Daines in critical Montana Senate race On The Trail: How Nancy Pelosi could improbably become president Supreme Court denies push to add Green Party candidates to Montana ballot MORE's (R-Mont.) plans to run for governor have put the state's at-large House district on Democrats' radar. Despite Trump carrying the state by 21 points in 2016, Democrats are hopeful they can grab the seat after Montana Gov. Steve Bullock Steve BullockMcConnell locks down key GOP votes in Supreme Court fight Senate Democrats demand White House fire controversial head of public lands agency Pence seeks to boost Daines in critical Montana Senate race MORE (D) won reelection that same year. Democratic Sen. Jon Tester Jonathan (Jon) TesterDemocrats shoot down talk of expanding Supreme Court Pence seeks to boost Daines in critical Montana Senate race This World Suicide Prevention Day, let's recommit to protecting the lives of our veterans MORE won reelection in the state in 2018.

While the Cook Political Report rates Florida's 16th Congressional District and Ohio's 12th District as likely Republican, Democrats see an opportunity to target the suburban vote in the districts.

Democrats also see an opportunity in Virginia's 5th Congressional District, held by Rep. Denver Riggleman Denver RigglemanVirginians wait up to four hours to cast early voting ballots Five things we learned from this year's primaries The Hill's Morning Report - Presented by Facebook - First lady casts Trump as fighter for the 'forgotten' MORE (R). The Cook Political Report rates the seat as likely Republican, but Republicans poured money into defending the district in 2018.

The newest target list demonstrates Democrats' optimism about growing their majority in the 2020 general election, especially among suburban voters potentially turned off by Trump.

Republicans have also been put on the defensive recently amid a wave of retirements.

The DCCC announced a number of ads taking aim at Reps. Rodney Davis (R-Ill.), Lee Zeldin (R-N.Y.), Brian Fitzpatrick (R-Pa.) and Adam Kinzinger (R-Ill.), all of whom are on the DCCC's "retirement watch list."