"I myself have long been skeptical of the value of increasing turnout, and am also a longtime opponent of mandatory voting...."

"I think most people do not have a duty to vote, even in high-stakes elections. And I have argued that relatively ignorant citizens can often do more good by abstaining from voting than by casting poorly informed votes (though I am also skeptical of arguments that government should try to weed out ignorant voters, primarily because I doubt that it can be trusted to do so in an unbiased way).... I held those views back when increased turnout was generally believed to benefit Democrats, and I continue to hold them today."

Writes Ilya Somin, in "Increased Voter Turnout Now Benefits Republicans/Survey data shows relatively infrequent voters are significantly more likely to support the Trump-era GOP than those who vote more often. Will this change traditional left and right-wing attitudes towards mandatory voting and other policies intended to increase turnout?" (Reason).

ADDED: I've declined to vote a couple times, and I strongly defend the right to abstain. I responded to critics on November 3, 2020, in a post titled "I'll just say this once, Althouse. Abstaining from voting is neither courageous nor principled."

[V]oting is [not] a duty... Like speaking, like religion, like getting married, like having sexual relations, voting is a right, and a right entails the power to decline to exercise it. It is horrible to be forced to speak, forced to take on a religion, forced to get married, forced to have sex — these are loathsome impositions.