Remove left border

All the borders of my tables except the far left bar have been removed. How can I remove the left one?
The website is bladeelectionresults.com.

The only CSS code I am using is below. Thanks in advance.
kfranck

.tablepress,
.tablepress tr {
background: none !important;
}

.tablepress tbody td {
font-family: Arial;
font-size: 10pt;
color: #000000;
}