After he has established his apostleship, he adds the Church in verses 6-7 "including you who are called to belong to Jesus Christ, to all those in Rome who are loved by God and called to be saints" He establishes election as he begins this letter the Rome and all the saints Jew and Greek (gentile), many say he does talk about election until the 9th chapter, when he starts the epistle with election as he does all of his epistles.
This epistle is the creme de la creme of his writings, for Christian theology. Here's an outline of the book, it's not the end all be all, but it'll help us as an outline for the book. I love this book, I remember teaching this book in the prison and the men loved it. Me view was different at that time on salvation and I had to workout some verses. Which I had a hard time doing, I said what I was taught, but when I stubbled on the words, I knew I needed to teach the Bible as it was written and not how I was taught. Here's an outline.
I. Introduction (1:1-15)
A. Salutation (1:1-7)
B. Paul and the Church at Rome (1:8-15)
II. Theme: The Gospel as the Revelation of God's Righteousness (1:16-17)
III. The need for salvation: The plight of Mankind (1:18-3:20)
A. In the Pagan World (1:18-32)
B. Principles of Judgement (2:1-16)
C. Specific Guilt of the Jews (2:17-3:8)
D. Summary (3:9-20)
IV. Justification: The Imputation of Righteousness (3:21-5:21)
A. The Description of Justification (3:21-26)
B. Justification Through Faith Alone (3:27-310
C. Justification from the Old Testament (4:1-25)
1. Case of Abraham(4:1-5)
2. Case of David (4:6-8)
3. Promise to Abraham, apart from circumcision (4:9-12)
4. Promise of Abraham, apart from the Law (4:13-15)
5. Abraham's faith the standard for every believer (4:16-25)
D. Benefit of Justification (5:1-11)
E. Universal Application of Justification (5:12-21)
V. Sanctification: Imputation of Righteousness (6:1-8:39)
A. Believer's Union with Christ in Death and Resurrection Life (6:1-14)
1. statement of the fact (6:1-10)
2. appeal based on the fact (6:11-14)
B. Union with Christ, as Enslavement to Righteousness (6:15-23)
C. Union with Christ as Deliverance from the Law (7:1-6)
D. The Relationship Between Law and Sin (7:7-25)
E. The Blessing of Life in the Spirit (8:1-39)
1. Liberation by the Spirit from the law of sin and death (8:1-11)
2. Additional ministries of the Spirit (8:12-27)
3. The security and permanence of the life of the redeemed (8:28-39)
VI. The Problem of Israel; God'd Righteousness Vindication (9:1-11:36)
A. Paul's Sorrow over Israel's Condition (9:1-5)
B. God's Choice of Israel Based on Election, not on Natural Generation or Works of Merit (9:6-13)
C. God's Freedom to Act in His Own Sovereign Right (9:14-29)
D. Israel's Failure to Obtain Righteousness due to Reliance on Works rather than Faith (9:30-10:21
E. Israel not entirely rejected; There is a Remnant of Believers (11:1-10)
F. Israel's Temporary Rejection and the Salvation of Gentiles (11:1-24)
G. Israel's Future Salvation (11:25-32)
H. Praise to God for His Wisdom and His Ways (11:33-36)
VII. Our Spiritual Service: The Practice of Righteousness (12:1-15:13)
A. The Appeal for Dedication of the Believer (12:1-2)
B. Varied Ministries in the Church, the Body of Christ (12:3-8)
C. Principles Governing Christian Conduct (12:9-21)
D. The Duty of Submission to Civil Authority (13:1-7)
E. The Comprehensive Obligation of Love (13:8-10)
F. The Purifying Power of Hope (13:11-14)
G. Questions of Conscience in Which Christians Differ (14:1-15:13)
1. Brethren must remain from judging one another (14:1-13)
2. Brethren must avoid offending one another (14:14-23)
3. The unity of the strong and weak in Christ (15:1-13)
VIII. Conclusion (15:14-16:27)
A. Paul's Past Labors, Present Program, and Future Plans (15:14-33)
B. Personal Greetings, Warning Concerning Schismatics, and Doxology (16:1-27)
This outline is from the Expositor's Bible Commentary. General Editor, Frank E. Gaebelein by Everett F. Harrison, Zondervan.
Hope this helps. i love the way Paul lies this book out, he establishes the weight of sin, which leaves us enemies of God with no desire to seek Him or service Him. Then he reveals God's love for His people.