I don't think there is enough votes to over ride his veto.
Per  Alaska Dispatch...to over ride Walker's veto it takes 3/4 of the total 60 [House + Senate members] is 45 votes

14 Senators supported Gov Walker (see SB128 vote )thus  5 out of  20 must vote to override his veto PLUS 100% of the 40  House's members must vote to override. Senate 5 + 40 ALL House members =45 override votes ..bad, bad Karma.

Comment: the House may let the 14 senators and 5(?) house members who voted to raid the PF Earnings Reserve swing in the November 8 general election wind... Where I live it maybe 20 below plus a *8 to 1 chill factor because the voters have been double crossed and lied to.

[*In 1999 we told the legislature 8 to 1 NO do not use PF earnings to run state government. So now we have Gov. Walker who hiked his leg on the 3 rail :) ]

10 senators are up for re-election ie 1/2 of the 20 total. Firing the Trojan Horses up 4 re-election Nov. 8th will cause the Earth to Shift.