The phrase "a proposition that would" is correct and usable in written English.
It can be used when discussing a suggestion or idea that has the potential to lead to a certain outcome or effect.
Example: "The committee presented a proposition that would significantly improve community engagement."
Alternatives: "an idea that could" or "a suggestion that might".
On Tuesday, voters in Berkeley will consider a proposition that would ban sitting or lying on commercial sidewalks.
In California, voters considered and defeated a proposition that would have allowed them to circumvent the term-limits law.
(Mr Davis is close to Bill Lerach, a trial lawyer who inspired a proposition that would have made it easier for shareholders to sue companies for "poor performance").
I mean this both in terms of its plot and as a proposition that would entice some very talented people and a vast army of producers.
Voters defeated a proposition that would have changed the city's charter to make the mayor and other city officials eligible for pensions.
Layden attempted to trade the 32-year-old Sprewell during the summer, a proposition that would be difficult now considering his age and his unwieldy contract.
The BNP's loss was all the worse for them because they had held seats on the local council and bragged that they would become the majority ruling party in the borough--a proposition that would have catapulted white nationalism into the center of English politics.
Oil companies are squaring off against venture capitalists in a fight over a California proposition that would tax oil production in the state to fund alternative energy.
On May 8 , 2012 North Carolina voters will consider Amendment 1, a ballot proposition that would inscribe a ban on same-sex marriage in the North Carolina Constitution.
However, FirstGroup, the UK's largest rail operator, said its winning bid of £5.5bn for the rights to run the line from December until 2026, rising to £6.1bn if it sees out a 20-month extension, was a "deliverable proposition" that would exploit unused capacity on the InterCity west coast services from London to destinations including Glasgow, Manchester and Liverpool.
This is a challenging proposition that would see duplicate chunks of a huge index distributed between broadband-connected PCs.
