legislation, legislative and legislature

Do not capitalize unless it begins a sentence. Capitalize when referencing a particular legislative body. Do not capitalize when used as a generic term.

• That is a legislative matter, not a judicial one.
• legislative special item
• The law-making body in a democracy is called a legislature.
• The Texas Legislature meets every other year in Austin.

Refer to bills as House Bill 1 or Senate Bill 1, or as HB 1 or SB 1 (no periods, no space between the letters, with a space between the letters and number).