The Magpies fell behind at Broadhall Way through Danny Newton's 38th-minute strike, but levelled through Elliott Hewitt in the second half.
Stevenage then found themselves repelling numerous attacks from the visitors and were lucky to hold out until the final whistle and ensure a share of the spoils.
Combined with Cheltenham Town's 97th-minute equaliser in a 2-2 draw with Luton Town, the draw at Broadhall Way / Lamex Stadium ensures Notts remain at the top of the table.
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