The final day of voting in a deeply divided nation’s high-stakes elections started mostly smoothly on Tuesday, with only scattered problems at some polling locations.

Arizona Secretary of State Adrian Fontes (D) said voting in the fiercely competitive battleground state was running smoothly, even if there were reports of minor hiccups that always happen with elections. “It’s the kind of day we want, and I’m knocking on wood right now,” he said at midmorning Tuesday.

In Pennsylvania, a software malfunction in Cambria County temporarily prevented ballots from being scanned countywide, according to local election officials — an issue that some Republicans quickly and baselessly alleged to be a targeted attack on the heavily GOP area.

The Cambria County Board of Elections said in a statement that it learned of the issue early Tuesday and was quickly working to rectify it, pledging that every vote would be counted. A court approved the board’s petition to extend voting time to 10 p.m., instead of the planned 8 p.m. close.