While reading Thomas R. Schreiner’s “Does Romans 9 Teach Individual Election Unto Salvation? Some Exegetical And Theological Reflections” I ran across this subpoint in which he makes some good refutations against the concept of corporate election–the idea that God has elected to salvation a corporate entity (i.e., the Church) as opposed to individuals. I hope that you will find his argument thought provoking and beneficial.
To say that election involves the selection of one group rather than another raises another problem that warrants an extended explanation. Most scholars who claim election is corporate argue that personal faith is the ultimate and decisive reason why some people are saved rather than others. Calvinists, on the other hand, assert that faith is the result of God’s predestining work. But those who opt for corporate election think that they have a better conception of election than Calvinists, and at the same time they can maintain that faith is what ultimately determines one’s salvation. Now it seems to me that there is a flaw in this reasoning that is fatal to those who espouse corporate election. If God corporately elects some people to salvation, and the election of one group rather than another was decided before any group came into existence (9:11), and it was not based on any works that this group did or any act of their will (9:11–12, 16), then it would seem to follow that the faith of the saved group would be God’s gift given before time began. But if the faith of any corporate entity depends upon God’s predestining work, then individual faith is not decisive for salvation. What is decisive would be God’s election of that group. In other words, the group elected would necessarily exercise faith since God elected this corporate entity.
On January 28th I posted a youtube video of an excerpt of a sermon by John Piper in which he described the real difference between the Arminian view of atonement (unlimited or universal) and the Calvinistic view of atonement (historically called limited atonement). 
This is a video of what I am assuming is an excerpt from a sermon by John Piper. In this excerpt Piper explains in very understandable language what is in many senses the essential difference between limited atonement (the Calvinistic view) and unlimited/universal atonement (the Arminian view)–two dominant views on the extent of the atonement. He clarifies what, in my opinion, are rather inappropriate terms (limited, unlimited, universal, etc.).
In this article, Andy Naselli discusses the beginning of John 15 and Jesus’ command, “Abide in Me, and I in you” (v.4). The article seeks to answer two questions many have posed regarding this passage. First, who are those represented by first type of branch that abide in Christ and therefore bear much fruit? Does this speak of some or all believers? Are these spiritual Christians or is abiding in Christ a characteristic of every true believer? Second, who are those represented by the second type of branch that never bears fruit and is therefore cut off? Is this a once saved believer who loses his salvation? Is this a saved yet unfruitful believer whom God is chastising? Or might this simply be a professing believer is not truly saved? Obviously, such questions have immense soteriological implications.
Kirk E. Miller 