[1] In December 2019, after Thomas V. Miller Jr. said he would not seek re-election as president of the Maryland Senate, King explored running to succeed him but ultimately decided against it.

[1] In 2001, King supported efforts to repeal the county's ban on cell phones in the classroom, calling it a "security blanket" for students and parents amid the September 11 attacks.

[19][20] In 2002, King said she opposed condom demonstrations in sex education classes, arguing that it was the responsibility of parents to teach their children how to use contraceptives.

[29] During the 2014 legislative session, King introduced a bill to repeal Maryland's ban on placing wagers on games of poker played at home.

[30] In 2020, she introduced legislation creating a ballot referendum to repeal the state's ban on sports betting,[31] which passed and was approved by voters in November 2020.

[35] In November 2023, King and eight other state senators signed a joint letter that threatened to defund immigrants rights group CASA de Maryland because it had called for an immediate ceasefire in the 2023 Israel–Hamas war and condemned the "utilization of US tax dollars to promote the ongoing violence.

[39] In 2006, King voted to uphold a committee decision blocking a bill to amend the state constitution to ban same-sex marriage.

[40] During her 2010 Senate campaign, she called legalizing same-sex marriage a "very, very difficult issue in our district" but said she would vote for it if a bill to do so was introduced.

[43] In 2019, King supported the End-of-Life Option Act, which would have provided palliative care to terminally ill adults, likening it to getting an abortion.

[50] In April 2021, she criticized a bill that would require more scrutiny over state public–private partnerships as an "attempt to add time and costs" to the highway projects.

[51] King blocked the bill from receiving a vote after Maryland Transportation Secretary Pete Rahn said it would result in a three-year delay to the highway projects.