Leah Stokes recently published a paper along with Nicole Goodman (Brock University) in the British Journal of Political Science on the use of internet voting. Examining municipal elections in Ontario, Canada and using panel data and fixed effects estimators, the paper finds that internet voting can increase turnout by 3.5 percentage points, with larger increases when vote by mail (VBM) is not yet adopted, and greater use when registration is not required. These estimates suggest that internet voting is unlikely to solve the low turnout crisis, and imply that cost arguments do not fully account for recent turnout declines.
The full paper can be read here and it is published as an open access article.