They're untouchable because they realize the nature of off year, mid term elections. https://www.fairvote.org/voter_turnout#voter_turnout_101 It's all about motivating their base to get out the vote. And the base for these elections is most likely older people, who are frequently more conservative https://money.usnews.com/money/retirement/aging/articles/why-older-citizens-are-more-likely-to-vote And less likely to embrace change https://www.zdnet.com/article/why-is-change-so-hard-for-some-people-especially-older-ones/ And Americans seem to be the most fearful people on the planet, to begin with, so, MAGA