Answer: improper use of voting machines.
Explanation:
Straight-ticket voting is a type of voting in which all the candidates in a particular party has on general election ballot. Straight-ticket has been around since 1960s. During those times it was nearly impossible not to vote on a straight-party line vote.
All Voters would have received a colored ballot with that party's candidates on it.
On the 1st of June, 2017, Governor Abbott signed into law House Bill 25, this law eliminates the straight-ticket voting option in Texas stating from 2020.
It has been reported that voting machines are changing the selections of some straight-ticket voters but this is not true. This problem occur because some voters are either hitting a button or using the selection wheel before the screen has finished loading. When voters do this, the voting machines de-selects the pre-filled candidate selection.
