B&W:
April - 1,125,881
Sept - 1,148,700
Likud:
April - 1,140,370
Sept - 1,111,535
April - 173,004
Sept - 309,688
April - 258,275
Sept - 329,834
April - 249,049
Sept - 268,688
April: 1,473,224
Sept: 1,553,490
It's not that there was a secular surge, it's that Right-wingers didn't show up or defected to Lieberman.
April: 298,066
Sept (total): 343,605
Sept (minus wasted Otzmah votes ): 260,339
Otzmah wasted 83,266 votes, or 2 seats for the Right. Wouldn't have swung it but would've strengthened Bibi's hand.
April: 337,108
Sept: 470,611
Wasted Otzmah votes and high Arab turnout hurt him also. But biggest problem was his own vote fall.