Five Things You Need to Know on Election Day in Lexington

1. It's Election Day! A sizeable turnout is expected today, as it's a presidential eleciton year with tightly contested races between President Barack Obama and former Massachusetts Gov. Mitt Romney for the White House and between incumbent Republican Scott Brown and Democrat Elizabeth Warren for US Senate. Follow this link to find a few things Town Clerk Donna Hooper thinks Lexington voters should know before hitting the polls today.

2. Local Races: There are contested races for both State Senate seats representing Lexington. In the Third Middlsex District, Lexington Democrat Mike Barrett faces Chelmsford Republican Sandi Martinez for the seat opening up with the retirement of eight-term state Sen. Susan Fargo, D-Lincoln. And in the Fourth Middlsex District, incumbent Ken Donnelly (D-Arlingotn) looks to hang onto his seat in a race against Republican challenger Gerry Dembrowski.

3. Wondering Where to Vote? Lexington has nine precincts and eight polling places, and we break them all down with the location of each right here on Patch.

4. No School Today: The Lexington Public Schools will not be in session today, due to all-day professional development, according to the district website.

5. Sunny and Clear: Should be mostly sunny today, but cool, with a high of 42, according to the National Weather Service, which predicts a clear and cold evening with a low of 29.