[1][2] He succeeded Democrat Tom Nelson, who had decline running for re-election to seek election as lieutenant governor.
He has identified himself as a proponent of limited government and lower taxes.
[3] In November 2020, Steineke was re-elected as the Assembly Majority Leader by his GOP colleagues.
[4] In March 2021, Steineke applauded the conservative majority on the Wisconsin Supreme Court for preventing Governor Tony Evers from extending a face mask mandate intended to halt the spread of the coronavirus.
[6] After announcing his retirement, he denounced the 2020 election review recommendations of Michael Gableman, saying that Gableman's suggestion that the legislature could "decertify the 2020 election" "would be the end of our republic as we know it.