Dem Casten upsets Roskam to flip Illinois House seat

Dem Casten upsets Roskam to flip Illinois House seat

Sean Casten, a clean-energy executive, pulled off a major upset Tuesday, unseating six-term GOP Rep. Peter Roskam Peter James RoskamHouse votes to temporarily repeal Trump SALT deduction cap Feehery: How Republicans can win back the suburbs Ex-GOP Rep. Roskam joins lobbying firm MORE in Illinois's 6th Congressional District.

It was one of the most hotly-contested races in the country, with Democrats making the seat one of their top targets.

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The wealthy suburban Chicago district has traditionally leaned red and Roskam handily won reelection in 2016. But the district also voted for Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonFormer Vermont Governor: Sanders 'will play dirty' NYT: Justice investigating alleged Comey leak of years-old classified info New Hampshire state lawmaker switches support from Warren to Klobuchar MORE by 7 points that year.

Polls showed Casten with a slight edge over the incumbent in the days leading up to the vote. The Cook Political Report also put the race in the "Lean Democratic" column and Democrats outspent Republicans in the race.

In an election that has widely been seen as a referendum on President TrumpDonald John TrumpLev Parnas implicates Rick Perry, says Giuliani had him pressure Ukraine to announce Biden probe Saudi Arabia paid 0 million for cost of US troops in area Parnas claims ex-Trump attorney visited him in jail, asked him to sacrifice himself for president MORE, Roskam also found himself under attack over his role in helping pass the Republican tax law. Roskam sits on the powerful House Ways and Means Committee, which writes tax laws.