Are all the elect raptured before the Tribulation, according to Calvinists? From this link:

It seems inconsistent for God to promise believers that they will not
suffer wrath and then leave them on the earth to suffer through the
wrath of the tribulation.
If the Bible is interpreted literally and consistently, the
pre-tribulational position is the most biblically-based
interpretation.

And this link:

At that moment, the world will have no born-again believers anywhere.


Does it mean there will be no more of God's elect?
I mean something like this :
Before the creation, God has 100 elects, humans who will be in heaven.
Not one of the 100 elects will taste the tribulation.

Matthew 24:31 And he will send out his angels with a loud trumpet
call, and they will gather his elect from the four winds, from one end
of heaven to the other

80 elects already died before the Rapture. The rest, 20 elects are raptured.
No more the elect, no more believer to the rest of the future after the Rapture, before the Millennial Kingdom.
Most Reformed/Calvinist churches are Amillennial.1 For Amillennials the "millennium" is a symbol for the entire church age, and there is no single time which we could call the "Great Tribulation". Instead there will be times of tribulation throughout this age. The second coming of Jesus is not seen as a complex multi-part event like the pre- and mid-tribulationists do, but just a single time of Jesus' return, the resurrection of the dead, and judgement.



1 The exceptions would generally be Reformed Baptists, who are often Premillennial, but could also be postmillennial. Amongst the Reformed Baptists there's probably lots of diversity about the Tribulation; it is not a clear dividing doctrine unlike credobaptism or Reformed Theology's doctrine of salvation.