Short answers, pulled from the story.
The Maryland General Assembly has 188 elected members in total. The upper chamber, the Maryland Senate, has 47 members, and the lower chamber, the Maryland House of Delegates, has 141 members. All members serve four-year terms and face no term limits.
The Maryland General Assembly convenes for 90 days each year. During that window it must act on more than 2,300 bills, including the state's annual budget, which must be passed before the session adjourns.
In 1639, the free men of Maryland passed an act requiring that assemblies be called at least once every three years. The measure was prompted by the fact that Parliament in England had gone unassembled for a decade, and the colonists wanted to ensure their voices could not be similarly silenced.
The COVID-19 pandemic forced the General Assembly to adjourn early on the 18th of March 2020. It was the first time the legislature had adjourned early since the Civil War.
When a vacancy occurs through death, resignation, or disqualification, the Governor of Maryland appoints a replacement. The replacement's name must be submitted by the State Central Committee of the same political party as the departing legislator.
Overriding a gubernatorial veto requires a three-fifths vote of both the Maryland Senate and the Maryland House of Delegates. The vetoed bill is returned to its house of origin, where the override process begins.