The alliance between the BJP and the JD(S) collapsed in October 2007 after Kumaraswamy refused to let Yeddyurappa take over as Chief minister as had been agreed upon in 2006.

They briefly got together and formed a short-lived government headed by Yeddyurappa in November 2007 but it quickly collapsed due to disagreements over power-sharing.

[2][1] The BJP campaigned on the high rate of inflation and criticized the national United Progressive Alliance government for being soft on terrorism.

But the main election plank of the party was the betrayal of the JD (S) and the good budgets presented by Yeddyurappa when he was finance minister in the coalition government.

[5] Vote share by party Seat share by party Source:[7] Sources: Election Commission of India,[8] Times of India,[9] News 18,[10][11] News Minute[12] Although the BJP fell 3 seats short of getting an absolute majority, B. S. Yeddyurappa was able to become chief minister with the support of 6 independent members of the assembly.