House and Senate leaders head into February with opioid abuse, solar energy and a driver’s license bill important to those with criminal backgrounds before conference committees, awaiting resolution. A fourth major bill, a planned overhaul of the public records law, may also be heading to conference in early February, since the House approved its records law bill last year and the Senate is ready to adopt its version on Thursday.

The week ahead also features Tuesday primary contests in House special elections in Brockton, Fitchburg and Peabody, a report on tax collections during January, and the reconvening on Wednesday of a Constitutional Convention, the forum where a citizens-backed millionaire’s tax proposal will be considered if lawmakers agree to bring it up or manage to work through other items on the agenda.

Lawmakers are gearing up for public hearings around the state on Gov. Charlie Baker’s $39.55 billion fiscal 2017 budget. The meetings give legislators a chance to probe administration officials about proposed spending levels and budgetary initiatives. According to a tentative schedule, the hearings will kick off on Tuesday at the State House where Administration and Finance Secretary Kristen Lepore, the primary architect of Baker’s budget, is scheduled to testify, followed by constitutional officers and the inspector general. Members of the House and Senate Ways and Means committees will then hit the road for six mostly invite-only hearings around the state before letting everyone have their say on March 4 at the State House.

On the political front, the Massachusetts presidential primary is about a month out and the first votes of the election will be cast at the Iowa caucuses on Monday, followed by the first-in-the-nation New Hampshire presidential primary on Feb. 9. So expect a stampede of major party candidates to the Granite State in the coming days. Despite their strong views on public policy issues, two of the Bay State’s most popular elected officials have opted against saying who they’d like as the next president. Sen. Elizabeth Warren, a Democrat, and Republican Gov. Baker have kept out of the race to date.