These 12 options are each listed as "Party; X; Y" and should be interpreted as conditional markets asking, "Conditional on Party winning X in the 2024 U.S. elections, will they also win Y?" X and Y can be the U.S. Senate, House of Representatives, or presidency.
Winning the presidency means that the party's nominee wins the Electoral College vote or is elected by the House if there is no Electoral College winner. Winning a chamber of Congress means that the party wins a majority of seats in that chamber. A mere plurality does not count as a majority. For the Senate, 50 seats plus the vice president's tiebreaking vote counts as a majority.
Independents who clearly intend to caucus with a party count as members of that party for this market. For Independents where it is not clear what party they will caucus with, or if they will even caucus with a party at all, I will wait until they actually take office to see if they officially join one party's caucus.
For this market, "winning the majority in an election" means that, if the winners of the election were seated at the exact moment that polls closed, their party would have a majority. In other words, it doesn't depend on anything that happens after the election, even if it affects the party's majority going into the 119th Congress. If for example, Republicans win a 51 seat Senate majority, but then Ron Johnson dies after the election and gets replaced by a Democratic appointee by Tony Evers, it would still count as Republicans winning a Senate majority. But it would not count if he died before the election took place.
And yes, many of these options will resolve N/A since they are all conditional.
1,000
3.00@MatthewLeong Yes, half of them will resolve N/A (technically, more than half could, but only in the unlikely scenario where neither party gets the majority for one of the chambers or a third party wins the presidency).