I want to know the answer to the following question:
Which voting concern has been present since the first season?
All the background I'm provided with is that "The mechanism of voting had also aroused considerable criticisms, most notably in season two when Ruben Studdard beat Clay Aiken in a close vote, and in season eight, when the massive increase in text votes (100 million more text votes than season 7) fueled the texting controversy.". Is that enough to answer the question?