Crossword Puzzle It gets the support of runners

Clue: It gets the support of runners

Item offering support (ITHOUGHTSO with 10 letters)
Item pinned on to support a Russian poet's election to office? (PUSHKINBUTTON with 13 letters)
Item on a therapist's office table, maybe (KLEENEXBOX with 10 letters)
Offer support to (ABET with 4 letters)
Support offerer (BRA with 3 letters)
Lingerie support item (BRA with 3 letters)
It offers support (BRA with 3 letters)
They offer support (e.g. BRAS with 4 letters)
Office support area (DATAENTRY with 9 letters)
Hosiery support item (GARTERBELT with 10 letters)