You blame boomers for LBJ's socialist excesses when in 1964, when LBJ was elected, absolutely no boomers were old enough to vote. The first presidential election where any more than a very small sampling of boomers was of voting age was 1972. So much of what x whiners lay at the feet of boomers is, in fact, "greatest" generation engineered.
But as I said, don't let the facts get in your way.
1970 Voting Rights Act was the lowering of the voting age to 18.
In 1964 only the first year of the considered "boom" (1946) was old enough to vote.
76 million people born between 1946 and 1964 and I know the Birth rates peaked at the year 1957. Not knowing the number for 1946 we could divide the number by the 18 years of the boom to get 4.2 million Baby Boomer votes in 1964.
LBJ won the Pop. Vote: 42,825,463 (60.6%).
The Boomer did not have enough votes to swing the election one way or another, even if you included another 4.2M for 1945.