rated as at least leaning Democratic. Cook listed six governorships as toss-ups: Missouri, New Hampshire, Vermont, West Virginia, Indiana, and North Carolina. Republicans won Missouri, New Hampshire, Vermont, and Indiana, while Democrats won North Carolina and West Virginia. 2017 New Jersey and Virginia each had open races for governor in 2017. Cook listed the Virginia race as "Lean Democratic" and the New Jersey race as "Likely Democratic". Democrats ended up winning both races by wide margins. 2018 In the race for control of the US House of Representatives, Cook listed 210 seats that at least leaned toward the Democrats; 194 seats that at least leaned toward the Republicans; and 30 seats that were "toss ups". Democrats ended up winning 235 seats, including all of the seats that Cook listed as at least leaning Democratic, as well as most of the "toss ups". However, Cook incorrectly predicted that Republicans would hold onto several seats that Democrats ended up winning, including Oklahoma's 5th Congressional District; South Carolina's 1st Congressional District; and New York's 11th Congressional District. In the race for control of the US Senate, Democrats won every seat that Cook listed as at least leaning Democratic, while Republicans won every seat Cook listed as at least leaning Republican. Cook also listed 9 Senate races as toss-ups; Democrats won four of these races, while Republicans won the other five. Among governor's races, Democrats won every seat that Cook listed as at least leaning Democratic, while Republicans won every seat Cook listed as at least leaning Republican. Cook also listed 12 governor's races as toss-ups; Republicans and Democrats ended up each winning 6 of these. 2019 Three states had elections for governor in 2019: Louisiana, Mississippi, and Kentucky. Cook rated the Mississippi race as "Lean Republican"; the Republican candidate ended up winning this race by a 5% margin. Cook rated the Louisiana and Kentucky races as "toss-up"; Democrats ended up narrowly winning both of them. 2020 On October 13, 2020, Cook's Senate and Govs Editor Jessica Taylor tweeted that Democrats were projected to gain 7 seats in the United States Senate. On that date, Cook rated 15 Senate seats as at least leaning toward the GOP; 13 seats as at least leaning toward the Democrats; and 7 "toss-ups.". After the election, every Senate seat rated Lean, Likely, or Solid Democrat was won by the Democratic candidate, and every seat rated Lean, Likely, or