if statements not properly giving right answer on strings

SO everytime i run this code I basically get random ratios for my tax, even when i type in 'washington' for strState

def main():

strState = input(str("Please enter a state: "))

fltSubtotal = 21

print(strState)

fltTax = 0.0

if strState == 'oregon' or 'florida':
    fltTax += (fltSubtotal * .00)

    if strState == 'washington' or 'california' or 'texas':
        fltTax += (fltSubtotal * .09)

else:
    fltTax += (fltSubtotal * .07)

print(fltTax)

main()