The Holy Scriptures also references individual, born-again Christians as elect.
You are only elected THROUGH the sanctification of the Spirit.
No individual could ever have been sanctified by the Spirit before the foundation of the world. For this obvious reason, election MUST take place for individuals the MOMENT Christ cleanses them and the Spirit sanctifies them.
Notice the context of the individuals' election of God in 1 Thessalonians.
9 For they themselves shew of us what manner of entering in we had unto you, and how ye turned to God from idols to serve the living and true God;
1 Thessalonians 1 brings to light the following powerful truths concerning when your election happened.
It happened after the gospel came unto you IN POWER.
It happened when you RECEIVED THE WORD and became FOLLOWERS.
It happened at the time you ENTERED IN.
It happened when you TURNED FROM IDOLS to serve the living and true God.
And none of that happened before the foundation of the world.
Finally, here are 2 more verses where individual Christians are designated as chosen and elect.
2 John 13 The children of thy elect sister greet thee. Amen.